Remove .wiki and @md-typography mixin in favor of .md and .md-file

Before, the styling for `img:not(.emoji)`` was repeated between
`.md:not(.use-csslab):not(.wiki)` (for comments and the Markdown
preview), `.documentation.wiki` (for help pages), and
`.issuable-details .description .wiki` (for MR and issue descriptions).

In these places, we now simply use `.md`. Wherever we use `.md` but
don't want this image styling (like wikis and blobs), `.md-file` is
added.

3 files changed, 6 insertions, 6 deletions

diff --git a/spec/features/merge_request/user_views_open_merge_request_spec.rb b/spec/features/merge_request/user_views_open_merge_request_spec.rb
index 71022c6bb08..849fab62fc6 100644
--- a/spec/features/merge_request/user_views_open_merge_request_spec.rb
+++ b/spec/features/merge_request/user_views_open_merge_request_spec.rb
@@ -13,7 +13,7 @@ describe 'User views an open merge request' do
     end
 
     it 'renders both the title and the description' do
-      node = find('.wiki h1 a#user-content-description-header')
+      node = find('.md h1 a#user-content-description-header')
       expect(node[:href]).to end_with('#description-header')
 
       # Work around a weird Capybara behavior where calling `parent` on a node
diff --git a/spec/features/projects/wiki/user_creates_wiki_page_spec.rb b/spec/features/projects/wiki/user_creates_wiki_page_spec.rb
index b1a7f167977..efb7b01f5ad 100644
--- a/spec/features/projects/wiki/user_creates_wiki_page_spec.rb
+++ b/spec/features/projects/wiki/user_creates_wiki_page_spec.rb
@@ -136,7 +136,7 @@ describe "User creates wiki page" do
           click_button("Create page")
         end
 
-        page.within ".wiki" do
+        page.within ".md" do
           expect(page).to have_selector(".katex", count: 3).and have_content("2+2 is 4")
         end
       end
diff --git a/spec/features/task_lists_spec.rb b/spec/features/task_lists_spec.rb
index 6fe840dccf6..33d9c10f5e8 100644
--- a/spec/features/task_lists_spec.rb
+++ b/spec/features/task_lists_spec.rb
@@ -79,7 +79,7 @@ describe 'Task Lists' do
         visit_issue(project, issue)
         wait_for_requests
 
-        expect(page).to have_selector(".wiki .task-list .task-list-item .task-list-item-checkbox")
+        expect(page).to have_selector(".md .task-list .task-list-item .task-list-item-checkbox")
         expect(page).to have_selector('a.btn-close')
       end
 
@@ -87,14 +87,14 @@ describe 'Task Lists' do
         visit_issue(project, issue)
         wait_for_requests
 
-        expect(page).to have_selector(".wiki .task-list .task-list-item .task-list-item-checkbox")
+        expect(page).to have_selector(".md .task-list .task-list-item .task-list-item-checkbox")
 
         logout(:user)
         login_as(user2)
         visit current_path
         wait_for_requests
 
-        expect(page).to have_selector(".wiki .task-list .task-list-item .task-list-item-checkbox")
+        expect(page).to have_selector(".md .task-list .task-list-item .task-list-item-checkbox")
       end
 
       it 'provides a summary on Issues#index' do
@@ -231,7 +231,7 @@ describe 'Task Lists' do
         container = '.detail-page-description .description.js-task-list-container'
 
         expect(page).to have_selector(container)
-        expect(page).to have_selector("#{container} .wiki .task-list .task-list-item .task-list-item-checkbox")
+        expect(page).to have_selector("#{container} .md .task-list .task-list-item .task-list-item-checkbox")
         expect(page).to have_selector("#{container} .js-task-list-field")
         expect(page).to have_selector('form.js-issuable-update')
         expect(page).to have_selector('a.btn-close')