* master: (293 commits)
  Revert changelog entry for removed feature
  Revert "Allow CI/CD Jobs being grouped on version strings"
  Resolve "Protected branches count is wrong when a wildcard includes several protected branches"
  Use standard codequality job
  Resolve "Allow the configuration of a project's merge method via the API"
  [Rails5] Rename `sort` methods to `sort_by_attribute`
  Add better LDAP connection handling
  Updated components to PascalCase
  Handle invalid params when trying update_username
  Move network related app settings to expandable blocks
  [Rails5] Update Gemfile.rails5.lock [ci skip]
  Update Security Products examples documentation
  Backport Gitlab::Git::Checksum to CE
  Add changelog
  Refactor discussions/notes code
  Remove unnecessary section looking in admin settings qa
  Explicitly use page context for qa/factory/settings/hashed_storage.rb
  Use gitlab_environment because we need:
  Allow feature gate removal through the API
  Use shard name in Git::GitlabProjects instead of shard path
  ...

Revert "Allow CI/CD Jobs being grouped on version strings"

Closes #44615

See merge request gitlab-org/gitlab-ce!18170

Allow feature gate removal through the API

See merge request gitlab-org/gitlab-ce!18146

This reverts commit 4f2cdb51.

Added pending tabs to IDE

See merge request gitlab-org/gitlab-ce!17936

Resolve "Protected branches count is wrong when a wildcard includes several protected branches"

Closes #20394

See merge request gitlab-org/gitlab-ce!17920

Use standard codequality job

See merge request gitlab-org/gitlab-ce!18070

Resolve "Allow the configuration of a project's merge method via the API"

Closes #39880

See merge request gitlab-org/gitlab-ce!18031

Redesign application settings to match project settings (part 5)

See merge request gitlab-org/gitlab-ce!18159

Use shard name in Git::GitlabProjects instead of shard path

Closes gitaly#1110

See merge request gitlab-org/gitlab-ce!18015

[Rails5] Rename `sort` methods to `sort_by_attribute`

See merge request gitlab-org/gitlab-ce!18142

Add better LDAP connection handling

See merge request gitlab-org/gitlab-ce!18039

[Rails5] Update Gemfile.rails5.lock

See merge request gitlab-org/gitlab-ce!18164

Handle invalid params when trying update_username

Closes #44925

See merge request gitlab-org/gitlab-ce!18167

Added comment for `key` usage

Resolve "Cancel icons in pipeline dropdowns are misaligned"

Closes #41224 and #37318

See merge request gitlab-org/gitlab-ce!18089

Using strong params to require the presence of a username when calling
`update_username`. Otherwise we'd raise a `NoMethodError` validating
the paths on disk.

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

Redesign application settings to match project settings (part 4)

See merge request gitlab-org/gitlab-ce!18100

Backport Gitlab::Git::Checksum to CE

See merge request gitlab-org/gitlab-ce!18161

Update Security Products examples documentation

See merge request gitlab-org/gitlab-ce!18151

Store sha256 checksum of Metadata in `ci_job_artifacts` table

See merge request gitlab-org/gitlab-ce!18149

Remove Rake test_ci task

Closes #44902

See merge request gitlab-org/gitlab-ce!18139

Upgrade Gitaly server verion

See merge request gitlab-org/gitlab-ce!18147

Update the 'Database Changes' MR template to add a step for QA

See merge request gitlab-org/gitlab-ce!16670