Add indices to improve loading of labels page

Closes #25413

See merge request !9121

only print errors and warnings from webpack dev server

See merge request !9118

Fix current build arrow

Closes #27939

See merge request !9154

Show directory hierarchy when listing wiki pages

Closes #23535

See merge request !8133

Replace static fixture for header_spec.js

See merge request !9174

Replace static fixture for new_branch_spec.js

See merge request !9131

Adds container to tooltip in order to make it work with overflow:hidden in parent element

Closes #28032

See merge request !9170

Resolve "Icon in issue search dropdown still animates"

Closes #28034

See merge request !9156

Merge branch '27947-missing-margin-between-loading-icon-and-text-in-merge-request-widget' into 'master'

Resolve "Missing margin between loading icon and text in Merge Request Widget"

Closes #27947

See merge request !9119

Add limit to the number of events showed in cycle analytics

See merge request !7743

Mark as WIP based on MR commits only

Closes #27886

See merge request !9085

Use safe navigation operator to make rubocop happy

See merge request !9185

Feature to create directly addressed Todos when mentioned in beginning

Closes #24976

See merge request !7926

Updated issue boards docs

Closes #27872

See merge request !9097

Add member: Always return 409 when a member exists

Closes #20732

See merge request !9093

removes grayish blue color for events activity

Closes #27608

See merge request !9179

Gather issuable  metadata to avoid n+ queries on index view

Closes #25900

See merge request !9006

Update Rubocop to Ruby 2.3

See merge request !8994

Move merge requests index file inside the merge_requests dir

See merge request !9181

[ci skip]

Fix issue from milestone

See merge request !8895

Add method for creating foreign keys concurrently

See merge request !9069

Rename Files::DeleteService to Files::DestroyService

See merge request !9110

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/27939

Resolve "Improve blockquote formatting in notification emails"

Closes #28029

See merge request !9157

Convert some vendored javascript assets to npm modules

See merge request !8990