* master: (121 commits)
Dedupe labels in labels selector in Dashboard pages
Refactor colors and lists
Add a safeguard in MergeRequest#compute_diverged_commits_count
Fix an issue when the target branch of a MR had been deleted
Add avatar to issue and MR pages header
Cleanup somce css colors
Re-group scss variables
Refactor `Todo#target`
Fixes issue with filter label missing on labels & milestones
Rename `Todo#to_reference` to `Todo#target_reference`
Fixed failing tests
Updated controller with before_action Fixed other issues based on feedback
Fixes issue on dashboard issues
Full labels data in JSON
Fixed issue with labels dropdown getting wrong labels
Update CHANGELOG
Use `Note#for_project_snippet?` to skip notes on project snippet
Use `Commit#short_id` instead of `Commit.truncate_sha`
Reuse `for_commit?` on conditional validations
Update schema info comment on todo related files
...
Conflicts:
app/models/issue.rb
db/schema.rb
spec/models/issue_spec.rb
