* master: (47 commits)
  Bumping gitlab-gollum-lib and gitlab-gollum-rugged_adapter
  i18n: document how to use links without splitting sentences
  Resolve "[Rails5] `ActionView::MissingTemplate` in spec/features/projects/wiki/user_views_wiki_page_spec.rb"
  Add CI job to check Gemfile.rails5.lock
  Add navigation theme documentation
  Move Gitaly branch/tag/ref RPC's to opt-out
  Add CI_{PIPELINE,JOB}_URL
  Resolve "Update docs as GKE cluster creation label has changed from "project ID" to "project""
  fixed/enhanced command-line documentation
  Use nip.io instead of xip.io
  [Rails5] Update Gitlab.rails5.lock
  Fix typo in doc/development/README.md
  Update import screenshot without LFS warning
  Hide overflow on hr
  Resolve "Milestone and labels dropdowns are misplaced with collapsed sidebar"
  Fix collapse sidebar button color
  Remove .row and .col-sm-12
  Relax expectation in spec/models/project_spec.rb
  fix padding in commit info
  GitHub Rake importer: Fail with a clearer explanation if GitLab username is wrong
  ...

Replace ... with ellipsis in placeholders

See merge request gitlab-org/gitlab-ce!19627

Bumping gitlab-gollum-lib and gitlab-gollum-rugged_adapter

Closes #47577

See merge request gitlab-org/gitlab-ce!19641

i18n: document how to use links without splitting sentences

See merge request gitlab-org/gitlab-ce!19682

Add CI_{PIPELINE,JOB}_URL

See merge request gitlab-org/gitlab-ce!19618

Merge branch 'blackst0ne-rails5-actionview-missingtemplate-in-spec-features-projects-wiki-user_views_wiki_page_spec-rb' into 'master'

Resolve "[Rails5] `ActionView::MissingTemplate` in spec/features/projects/wiki/user_views_wiki_page_spec.rb"

Closes #47738

See merge request gitlab-org/gitlab-ce!19685

Resolve "[Rails5] `ActionView::MissingTemplate` in spec/features/projects/wiki/user_views_wiki_page_spec.rb"

Add CI job to check Gemfile.rails5.lock

See merge request gitlab-org/gitlab-ce!19605

Remove unnecessary and broken example

See merge request gitlab-org/gitlab-ce!19598

Add Gitlab::SQL:CTE for easily building CTE statements

See merge request gitlab-org/gitlab-ce!19652

Qa 112 fix auto devops cluster spec

See merge request gitlab-org/gitlab-ce!19584

Use nip.io instead of xip.io

See merge request gitlab-org/gitlab-ce!19688

Add navigation theme documentation

See merge request gitlab-org/gitlab-ce!19645

Move Gitaly branch/tag/ref RPC's to opt-out

See merge request gitlab-org/gitlab-ce!19644

CE: Unify app/views/ci/variables/_variable_row.html.haml

See merge request gitlab-org/gitlab-ce!19594

Fix width of project avatar in Web IDE

Closes #47696

See merge request gitlab-org/gitlab-ce!19647

Merge branch '47731-update-docs-as-gke-cluster-creation-label-has-changed-from-project-id-to-project' into 'master'

Resolve "Update docs as GKE cluster creation label has changed from "project ID" to "project""

Closes #47731

See merge request gitlab-org/gitlab-ce!19676

Remove favicon-blue.ico because it's no longer used

See merge request gitlab-org/gitlab-ce!19658

Fix typo in doc/development/README.md

See merge request gitlab-org/gitlab-ce!19679

Update import screenshot without LFS warning

Closes gitlab-ee#6382

See merge request gitlab-org/gitlab-ce!19668

Fixes rejected pushes from maintainers

Closes #46337

See merge request gitlab-org/gitlab-ce!18968

fixed/enhanced command-line documentation

See merge request gitlab-org/gitlab-ce!19589

[Rails5] Update Gitlab.rails5.lock

See merge request gitlab-org/gitlab-ce!19681

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Fix input placeholder text color

Closes #47645

See merge request gitlab-org/gitlab-ce!19633

Merge branch '47687-milestone-and-labels-dropdowns-are-misplaced-with-collapsed-sidebar' into 'master'

Resolve "Milestone and labels dropdowns are misplaced with collapsed sidebar"

Closes #47687

See merge request gitlab-org/gitlab-ce!19666

Fix: New project > Import gitlab.com project page

Closes #47357

See merge request gitlab-org/gitlab-ce!19656

Resolve "avatar settings page hr is misbehaving"

Closes #47245

See merge request gitlab-org/gitlab-ce!19667

Avatars and system icons on left of notes are shown on mobile

Closes #47604

See merge request gitlab-org/gitlab-ce!19585

Resolve "Revert MR modal box is too smal after BS4"

Closes #47522

See merge request gitlab-org/gitlab-ce!19603