5 files changed, 25 insertions, 5 deletions
diff --git a/app/services/merge_requests/create_service.rb b/app/services/merge_requests/create_service.rb
index 33609d01f20..96a25330af1 100644
--- a/app/services/merge_requests/create_service.rb
+++ b/app/services/merge_requests/create_service.rb
@@ -8,11 +8,14 @@ module MergeRequests
       @project = Project.find(params[:target_project_id]) if params[:target_project_id]
 
       filter_params
-      label_params = params[:label_ids]
-      merge_request = MergeRequest.new(params.except(:label_ids))
+      label_params = params.delete(:label_ids)
+      force_remove_source_branch = params.delete(:force_remove_source_branch)
+
+      merge_request = MergeRequest.new(params)
       merge_request.source_project = source_project
       merge_request.target_project ||= source_project
       merge_request.author = current_user
+      merge_request.merge_params['force_remove_source_branch'] = force_remove_source_branch
 
       if merge_request.save
         merge_request.update_attributes(label_ids: label_params)
diff --git a/app/services/merge_requests/merge_service.rb b/app/services/merge_requests/merge_service.rb
index 9a58383b398..9aaf5a5e561 100644
--- a/app/services/merge_requests/merge_service.rb
+++ b/app/services/merge_requests/merge_service.rb
@@ -45,10 +45,14 @@ module MergeRequests
     def after_merge
       MergeRequests::PostMergeService.new(project, current_user).execute(merge_request)
 
-      if params[:should_remove_source_branch].present?
-        DeleteBranchService.new(@merge_request.source_project, current_user).
+      if params[:should_remove_source_branch].present? || @merge_request.force_remove_source_branch?
+        DeleteBranchService.new(@merge_request.source_project, branch_deletion_user).
           execute(merge_request.source_branch)
       end
     end
+
+    def branch_deletion_user
+      @merge_request.force_remove_source_branch? ? @merge_request.author : current_user
+    end
   end
 end
diff --git a/app/services/merge_requests/update_service.rb b/app/services/merge_requests/update_service.rb
index 477c64e7377..026a37997d4 100644
--- a/app/services/merge_requests/update_service.rb
+++ b/app/services/merge_requests/update_service.rb
@@ -11,6 +11,8 @@ module MergeRequests
       params.except!(:target_project_id)
       params.except!(:source_branch)
 
+      merge_request.merge_params['force_remove_source_branch'] = params.delete(:force_remove_source_branch)
+
       update(merge_request)
     end
 
diff --git a/app/services/projects/autocomplete_service.rb b/app/services/projects/autocomplete_service.rb
index ba50305dbd5..eb73948006e 100644
--- a/app/services/projects/autocomplete_service.rb
+++ b/app/services/projects/autocomplete_service.rb
@@ -4,6 +4,10 @@ module Projects
       @project.issues.visible_to_user(current_user).opened.select([:iid, :title])
     end
 
+    def milestones
+      @project.milestones.active.reorder(due_date: :asc, title: :asc).select([:iid, :title])
+    end
+
     def merge_requests
       @project.merge_requests.opened.select([:iid, :title])
     end
diff --git a/app/services/system_note_service.rb b/app/services/system_note_service.rb
index 972f8b2012d..4e8fa0818b9 100644
--- a/app/services/system_note_service.rb
+++ b/app/services/system_note_service.rb
@@ -169,7 +169,14 @@ class SystemNoteService
   #
   # Returns the created Note object
   def self.change_title(noteable, project, author, old_title)
-    body = "Title changed from **#{old_title}** to **#{noteable.title}**"
+    new_title = noteable.title.dup
+
+    old_diffs, new_diffs = Gitlab::Diff::InlineDiff.new(old_title, new_title).inline_diffs
+
+    marked_old_title = Gitlab::Diff::InlineDiffMarker.new(old_title).mark(old_diffs, mode: :deletion, markdown: true)
+    marked_new_title = Gitlab::Diff::InlineDiffMarker.new(new_title).mark(new_diffs, mode: :addition, markdown: true)
+
+    body = "Changed title: **#{marked_old_title}** → **#{marked_new_title}**"
     create_note(noteable: noteable, project: project, author: author, note: body)
   end