Refactor Discussions docs

- Move to dicsussions/index.md
- Bring back previous path with a link to new location
- Reorder sections

19 files changed, 83 insertions, 71 deletions

diff --git a/doc/README.md b/doc/README.md
index 67deda1eaeb..fb393aa09a1 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -15,6 +15,7 @@ All technical content published by GitLab lives in the documentation, including:
 - [API](api/README.md) Automate GitLab via a simple and powerful API.
 - [CI/CD](ci/README.md) GitLab Continuous Integration (CI) and Continuous Delivery (CD) getting started, `.gitlab-ci.yml` options, and examples.
 - [Container Registry](user/project/container_registry.md) Learn how to use GitLab Container Registry.
+- [Discussions](user/discussions/index.md) Threads, comments, and resolvable discussions in issues, commits, and  merge requests.
 - [Git Attributes](user/project/git_attributes.md) Managing Git attributes using a `.gitattributes` file.
 - [Git cheatsheet](https://gitlab.com/gitlab-com/marketing/raw/master/design/print/git-cheatsheet/print-pdf/git-cheatsheet.pdf) Download a PDF describing the most used Git operations.
 - [GitLab as OAuth2 authentication service provider](integration/oauth_provider.md). It allows you to login to other applications from GitLab.
@@ -23,7 +24,6 @@ All technical content published by GitLab lives in the documentation, including:
 - [Importing and exporting projects between instances](user/project/settings/import_export.md).
 - [Importing to GitLab](workflow/importing/README.md) Import your projects from GitHub, Bitbucket, GitLab.com, FogBugz and SVN into GitLab.
 - [Markdown](user/markdown.md) GitLab's advanced formatting system.
-- [Discussions](user/discussions.md) Get the most out of your conversations.
 - [Migrating from SVN](workflow/importing/migrating_from_svn.md) Convert a SVN repository to Git and GitLab.
 - [Permissions](user/permissions.md) Learn what each role in a project (external/guest/reporter/developer/master/owner) can do.
 - [Profile Settings](profile/README.md)
diff --git a/doc/user/img/btn_new_issue_for_all_discussions.png b/doc/user/discussions/img/btn_new_issue_for_all_discussions.png
index b15447ec290..b15447ec290 100644
--- a/doc/user/img/btn_new_issue_for_all_discussions.png
+++ b/doc/user/discussions/img/btn_new_issue_for_all_discussions.png
diff --git a/doc/user/img/comment_type_toggle.gif b/doc/user/discussions/img/comment_type_toggle.gif
index b73c197b97f..b73c197b97f 100644
--- a/doc/user/img/comment_type_toggle.gif
+++ b/doc/user/discussions/img/comment_type_toggle.gif
diff --git a/doc/user/img/discussion_comment.png b/doc/user/discussions/img/discussion_comment.png
index 8f66d138922..8f66d138922 100644
--- a/doc/user/img/discussion_comment.png
+++ b/doc/user/discussions/img/discussion_comment.png
diff --git a/doc/user/img/discussion_view.png b/doc/user/discussions/img/discussion_view.png
index 2ee1db2eab3..2ee1db2eab3 100644
--- a/doc/user/img/discussion_view.png
+++ b/doc/user/discussions/img/discussion_view.png
diff --git a/doc/user/img/discussions_resolved.png b/doc/user/discussions/img/discussions_resolved.png
index 3fd496f6da5..3fd496f6da5 100644
--- a/doc/user/img/discussions_resolved.png
+++ b/doc/user/discussions/img/discussions_resolved.png
diff --git a/doc/user/img/new_issue_for_discussion.png b/doc/user/discussions/img/new_issue_for_discussion.png
index 93c9dad8921..93c9dad8921 100644
--- a/doc/user/img/new_issue_for_discussion.png
+++ b/doc/user/discussions/img/new_issue_for_discussion.png
diff --git a/doc/user/img/only_allow_merge_if_all_discussions_are_resolved.png b/doc/user/discussions/img/only_allow_merge_if_all_discussions_are_resolved.png
index 928c7d33898..928c7d33898 100644
--- a/doc/user/img/only_allow_merge_if_all_discussions_are_resolved.png
+++ b/doc/user/discussions/img/only_allow_merge_if_all_discussions_are_resolved.png
diff --git a/doc/user/img/only_allow_merge_if_all_discussions_are_resolved_msg.png b/doc/user/discussions/img/only_allow_merge_if_all_discussions_are_resolved_msg.png
index bcdc0250d7c..bcdc0250d7c 100644
--- a/doc/user/img/only_allow_merge_if_all_discussions_are_resolved_msg.png
+++ b/doc/user/discussions/img/only_allow_merge_if_all_discussions_are_resolved_msg.png
diff --git a/doc/user/img/preview_issue_for_discussion.png b/doc/user/discussions/img/preview_issue_for_discussion.png
index 2ee0653b2ba..2ee0653b2ba 100644
--- a/doc/user/img/preview_issue_for_discussion.png
+++ b/doc/user/discussions/img/preview_issue_for_discussion.png
diff --git a/doc/user/img/preview_issue_for_discussions.png b/doc/user/discussions/img/preview_issue_for_discussions.png
index 3fe0a666678..3fe0a666678 100644
--- a/doc/user/img/preview_issue_for_discussions.png
+++ b/doc/user/discussions/img/preview_issue_for_discussions.png
diff --git a/doc/user/img/resolve_comment_button.png b/doc/user/discussions/img/resolve_comment_button.png
index 70340108874..70340108874 100644
--- a/doc/user/img/resolve_comment_button.png
+++ b/doc/user/discussions/img/resolve_comment_button.png
diff --git a/doc/user/img/resolve_discussion_button.png b/doc/user/discussions/img/resolve_discussion_button.png
index ab454f661e0..ab454f661e0 100644
--- a/doc/user/img/resolve_discussion_button.png
+++ b/doc/user/discussions/img/resolve_discussion_button.png
diff --git a/doc/user/img/resolve_discussion_issue_notice.png b/doc/user/discussions/img/resolve_discussion_issue_notice.png
index e0ee6a39ffd..e0ee6a39ffd 100644
--- a/doc/user/img/resolve_discussion_issue_notice.png
+++ b/doc/user/discussions/img/resolve_discussion_issue_notice.png
diff --git a/doc/user/img/resolve_discussion_open_issue.png b/doc/user/discussions/img/resolve_discussion_open_issue.png
index 98d63278326..98d63278326 100644
--- a/doc/user/img/resolve_discussion_open_issue.png
+++ b/doc/user/discussions/img/resolve_discussion_open_issue.png
diff --git a/doc/user/discussions.md b/doc/user/discussions/index.md
index 2276bf1971e..c5123c06ce0 100644
--- a/doc/user/discussions.md
+++ b/doc/user/discussions/index.md
@@ -2,13 +2,26 @@
 
 The ability to contribute conversationally is offered throughout GitLab.
 
-## Standard Comments
+You can leave a comment in the following places:
 
-Standard comments can be added to issues, merge requests, snippets, commits and commit diffs.
+- issues
+- merge requests
+- snippets
+- commits
+- commit diffs
 
-## Resolvable Discussions
+The comment area supports [Markdown] and [slash commands]. One can edit their
+own comment at any time, and anyone with [Master access level][permissions] or
+higher can also a comment made by someone else.
 
-Resolvable discussions can be added to merge request diffs, merge requests, issues, commits and snippets.
+Apart from the standard comments, you also have the option to create a comment
+in the form of a resolvable or threaded discussion.
+
+## Resolvable discussions
+
+>**Notes:**
+- The main feature was [introduced][ce-5022] in GitLab 8.11.
+- Resolvable discussions can be added only to merge request diffs.
 
 Discussion resolution helps keep track of progress during planning or code review.
 Resolving comments prevents you from forgetting to address feedback and lets you
@@ -19,9 +32,20 @@ hide discussions that are no longer relevant.
 Comments and discussions can be resolved by anyone with at least Developer
 access to the project or the author of the merge request.
 
+### Jumping between unresolved discussions
+
+When a merge request has a large number of comments it can be difficult to track
+what remains unresolved. You can jump between unresolved discussions with the
+Jump button next to the Reply field on a discussion.
+
+You can also jump to the first unresolved discussion from the button next to the
+resolved discussions tracker.
+
+!["3/4 discussions resolved"][discussions-resolved]
+
 ### Marking a comment or discussion as resolved
 
-You can mark a discussion as resolved by clicking the "Resolve discussion"
+You can mark a discussion as resolved by clicking the **Resolve discussion**
 button at the bottom of the discussion.
 
 !["Resolve discussion" button][resolve-discussion-button]
@@ -30,51 +54,49 @@ Alternatively, you can mark each comment as resolved individually.
 
 !["Resolve comment" button][resolve-comment-button]
 
-### Moving a single discussion to a new issue
+### Move all unresolved discussions in a merge request to an issue
 
 > [Introduced][ce-8266] in GitLab 9.1
 
-To create a new issue for a single discussion, you can use the **Resolve this
-discussion in a new issue** button.
+To continue all open discussions from a merge request in a new issue, click the
+**Resolve all discussions in new issue** button.
 
-![Create issue for discussion](img/new_issue_for_discussion.png)
+![Open new issue for all unresolved discussions](img/btn_new_issue_for_all_discussions.png)
 
-This will direct you to a new issue prefilled with the content of the
-discussion, similar to the issues created for delegating multiple
-discussions at once.
+Alternatively, when your project only accepts merge requests [when all discussions
+are resolved](#only-allow-merge-requests-to-be-merged-if-all-discussions-are-resolved),
+there will be an **open an issue to resolve them later** link in the merge
+request widget.
 
-![New issue for a single discussion](img/preview_issue_for_discussion.png)
+![Link in merge request widget](img/resolve_discussion_open_issue.png)
 
-Saving the issue will mark the discussion as resolved and add a note
-to the discussion referencing the new issue.
+This will prepare an issue with its content referring to the merge request and
+the unresolved discussions.
 
-[ce-5022]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5022
-[ce-7125]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7125
-[ce-7180]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7180
-[ce-8266]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8266
-[resolve-discussion-button]: img/resolve_discussion_button.png
-[resolve-comment-button]: img/resolve_comment_button.png
-[discussion-view]: img/discussion_view.png
-[discussions-resolved]: img/discussions_resolved.png
+![Issue mentioning discussions in a merge request](img/preview_issue_for_discussions.png)
 
-## Merge request diffs
+Hitting **Submit issue** will cause all discussions to be marked as resolved and
+add a note referring to the newly created issue.
 
-> [Introduced][ce-5022] in GitLab 8.11.
+![Mark discussions as resolved notice](img/resolve_discussion_issue_notice.png)
 
-Discussions can be started on merge request diffs to keep track of progress during code review.
+You can now proceed to merge the merge request from the UI.
 
-!["A discussion between two people on a piece of code"][discussion-view]
+### Moving a single discussion to a new issue
 
-### Jumping between unresolved discussions
+> [Introduced][ce-8266] in GitLab 9.1
 
-When a merge request has a large number of comments it can be difficult to track
-what remains unresolved. You can jump between unresolved discussions with the
-Jump button next to the Reply field on a discussion.
+To create a new issue for a single discussion, you can use the **Resolve this
+discussion in a new issue** button.
 
-You can also jump to the first unresolved discussion from the button next to the
-resolved discussions tracker.
+![Create issue for discussion](img/new_issue_for_discussion.png)
 
-!["3/4 discussions resolved"][discussions-resolved]
+This will direct you to a new issue prefilled with the content of the
+discussion, similar to the issues created for delegating multiple
+discussions at once. Saving the issue will mark the discussion as resolved and
+add a note to the merge request discussion referencing the new issue.
+
+![New issue for a single discussion](img/preview_issue_for_discussion.png)
 
 ### Only allow merge requests to be merged if all discussions are resolved
 
@@ -94,46 +116,35 @@ are resolved.
 
 ![Only allow merge if all the discussions are resolved message](img/only_allow_merge_if_all_discussions_are_resolved_msg.png)
 
-### Move all unresolved discussions in a merge request to an issue
-
-> [Introduced][ce-8266] in GitLab 9.1
-
-To continue all open discussions in a merge request, click the button **Resolve
-all discussions in new issue**
-
-![Open new issue for all unresolved discussions](img/btn_new_issue_for_all_discussions.png)
-
-Alternatively, when your project only accepts merge requests when all discussions
-are resolved, there will be an **open an issue to resolve them later** link in
-the merge request-widget.
-
-![Link in merge request widget](img/resolve_discussion_open_issue.png)
-
-This will prepare an issue with content referring to the merge request and
-discussions.
-
-![Issue mentioning discussions in a merge request](img/preview_issue_for_discussions.png)
-
-Hitting **Submit issue** will cause all discussions to be marked as resolved and
-add a note referring to the newly created issue.
-
-![Mark discussions as resolved notice](img/resolve_discussion_issue_notice.png)
-
-You can now proceed to merge the merge request from the UI.
-
-
-## Issues, commits, snippets and merge requests
+## Threaded discussions
 
 > [Introduced][ce-7527] in GitLab 9.1.
 
-Discussions can be started on issues, commits, snippets and merge requests.
+While resolvable discussions are only available to merge request diffs,
+discussions can also be added without a diff. You can start a specific
+discussion which will look like a thread, on issues, commits, snippets, and
+merge requests.
 
-Resolvable discussions can be added to merge request diffs, but discussions can also be added without a diff.
-
-To start a discussion, you can click on the "Comment" button toggle dropdown, select "Start discussion" and click "Start discussion" when you're ready to post the comment.
+To start a threaded discussion, click on the **Comment** button toggle dropdown,
+select **Start discussion** and click **Start discussion** when you're ready to
+post the comment.
 
 ![Comment type toggle](img/comment_type_toggle.gif)
 
-This will post a comment with a single thread to allow you to discuss specific comments in greater detail.
+This will post a comment with a single thread to allow you to discuss specific
+comments in greater detail.
 
 ![Discussion comment](img/discussion_comment.png)
+
+[ce-5022]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5022
+[ce-7125]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7125
+[ce-7527]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7527
+[ce-7180]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7180
+[ce-8266]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8266
+[resolve-discussion-button]: img/resolve_discussion_button.png
+[resolve-comment-button]: img/resolve_comment_button.png
+[discussion-view]: img/discussion_view.png
+[discussions-resolved]: img/discussions_resolved.png
+[markdown]: ../markdown.md
+[slash commands]: ../project/slash_commands.md
+[permissions]: ../permissions.md
diff --git a/doc/user/project/merge_requests/index.md b/doc/user/project/merge_requests/index.md
index 237d7db30fc..954454f7e7a 100644
--- a/doc/user/project/merge_requests/index.md
+++ b/doc/user/project/merge_requests/index.md
@@ -34,7 +34,7 @@ Keep track of the progress during a code review with resolving comments.
 Resolving comments prevents you from forgetting to address feedback and lets
 you hide discussions that are no longer relevant.
 
-[Read more about resolving discussion comments in merge requests reviews.](../../discussions.md)
+[Read more about resolving discussion comments in merge requests reviews.](../../discussions/index.md)
 
 ## Resolve conflicts
 
diff --git a/doc/user/project/merge_requests/merge_request_discussion_resolution.md b/doc/user/project/merge_requests/merge_request_discussion_resolution.md
new file mode 100644
index 00000000000..200965875a1
--- /dev/null
+++ b/doc/user/project/merge_requests/merge_request_discussion_resolution.md
@@ -0,0 +1 @@
+This document was moved to [another location](../../discussions/index.md).
diff --git a/doc/workflow/README.md b/doc/workflow/README.md
index edcb03e03b1..604c7d5cefb 100644
--- a/doc/workflow/README.md
+++ b/doc/workflow/README.md
@@ -32,7 +32,7 @@
   - [Authorization for merge requests](../user/project/merge_requests/authorization_for_merge_requests.md)
   - [Cherry-pick changes](../user/project/merge_requests/cherry_pick_changes.md)
   - [Merge when pipeline succeeds](../user/project/merge_requests/merge_when_pipeline_succeeds.md)
-  - [Resolve discussion comments in merge requests reviews](../user/discussions.md)
+  - [Resolve discussion comments in merge requests reviews](../user/discussions/index.md)
   - [Resolve merge conflicts in the UI](../user/project/merge_requests/resolve_conflicts.md)
   - [Revert changes in the UI](../user/project/merge_requests/revert_changes.md)
   - [Merge requests versions](../user/project/merge_requests/versions.md)