Add a `initialize_with_readme` parameter to POST /projects.

EE port of https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/21617

CE upstream - 2018-09-11 18:21 UTC

See merge request gitlab-org/gitlab-ee!7333

New epic custom notifications docs

See merge request gitlab-org/gitlab-ee!7336

Docs for integrated milestones

See merge request gitlab-org/gitlab-ee!7337

Use gitlab-ui loading icon [EE]

See merge request gitlab-org/gitlab-ee!7322

This was renamed to DetailedStatusEntity

Resolve "Move EE JavaScript tests to their own respective directory"

See merge request gitlab-org/gitlab-ee!6663

# Conflicts:
#	app/assets/stylesheets/framework/selects.scss

[ci skip]

Fix the group and project activity pages

Closes #51375

See merge request gitlab-org/gitlab-ce!21674

Add empty state illustration information in job API

Closes #51112

See merge request gitlab-org/gitlab-ce!21532

Rake geo:status doesn't report CI job artifact numbers

Closes #7216

See merge request gitlab-org/gitlab-ee!7307

[CE] Fix rails 5 deprecation warnings

See merge request gitlab-org/gitlab-ce!21673

Resolve "[SCSS Variables Cleanup] Combine all duplicated hex colors in variables.scss", Part 1

See merge request gitlab-org/gitlab-ce!21375

EE port of 50632-combine-color-duplicates

See merge request gitlab-org/gitlab-ee!6982

Enable frozen string in vestigial files

See merge request gitlab-org/gitlab-ce!21665

Use Rails.root for CommonMetricsImporter

Closes #51333

See merge request gitlab-org/gitlab-ce!21664

Add ability to skip user email confirmation with API

Closes #50876

See merge request gitlab-org/gitlab-ce!21630

Fixes rails 5 deprecation warnings in `config/` files

CE upstream - 2018-09-11 15:21 UTC

Closes #7009

See merge request gitlab-org/gitlab-ee!7331

Fix rails 5 deprecation warnings

See merge request gitlab-org/gitlab-ee!7324

Add sorting for labels on labels page

See merge request gitlab-org/gitlab-ce!21642

Fix workhorse temp path for namespace uploads

Closes gitlab-ee#7009

See merge request gitlab-org/gitlab-ce!21650

Remove jquery.scss; Combine multiple duplicate grays into global gray variables; Remove unused styles in common.scss

Remove jquery.scss; Combine multiple duplicate grays into global gray variables; Remove unused styles in common.scss

Resolve "Filter bar height changes when items are added"

Closes #49943

See merge request gitlab-org/gitlab-ce!21609

Rename before_filter to before_action

See merge request gitlab-org/gitlab-ee!7323

CE upstream - 2018-09-11 12:21 UTC

See merge request gitlab-org/gitlab-ee!7330

Resolve "Project export broken when avatar is set"

Closes #51318

See merge request gitlab-org/gitlab-ce!21649