* master: (27 commits)
  Resolve "Bug: When creating an account with invalid characters the error is "Username already taken" not "Invalid characters used""
  Resolve "Provide ability to retrieve `visibility` level via Snippets API"
  Resolve "Quick actions are case sensitive"
  Image Diff Viewing + Download Diff Viewing
  Link to release post for group issue board docs
  moved strings into constants file
  Typo fix
  fixed condition check
  Loosen the 'newly created MR' matcher
  Ensure we look into the correct setion only when expanding a settings' section
  Rails5 fix expected `issuable.reload.updated_at` to have changed
  [Rails5] Pass class references instead of strings to middleware builder
  Sidebar Milestone - Fix wrong URL when selecting a parent group milestone
  Fix Banzai reference for milestones belonging to parent groups
  apply feedback
  fixed eslint
  added specs for is-active class added spec for openPendingTab in component
  more karma fixes
  karma updates
  Override exclusive_lease_key method in RecordsUpload
  ...

Resolve "Bug: When creating an account with invalid characters the error is "Username already taken" not "Invalid characters used""

Closes #45575

See merge request gitlab-org/gitlab-ce!19610

Resolve "Bug: When creating an account with invalid characters the error is "Username already taken" not "Invalid characters used""

Resolve "Provide ability to retrieve `visibility` level via Snippets API"

Closes #35158

See merge request gitlab-org/gitlab-ce!19620

Resolve "Quick actions are case sensitive"

Closes #47050

See merge request gitlab-org/gitlab-ce!19614

Add active class to active file in IDE commit panel

Closes #46051

See merge request gitlab-org/gitlab-ce!19646

Resolve "Regressions for assigning group milestone from ancestor"

Closes #47735

See merge request gitlab-org/gitlab-ce!19721

Merge branch '47513-upload-migration-lease-key-is-incorrect-for-non-mounted-uploaders' into 'master'

Resolve "Upload migration lease key is incorrect for non-mounted uploaders"

Closes #47513

See merge request gitlab-org/gitlab-ce!19600

Image Diff Viewing + Download Diff Viewing

See merge request gitlab-org/gitlab-ce!18768

Link to release post for group issue board docs

See merge request gitlab-org/gitlab-ce!19677

Resolve two QA failures

Closes gitlab-qa#271

See merge request gitlab-org/gitlab-ce!19655

Fixed IDE jobs empty state showing when loading

Closes #47766

See merge request gitlab-org/gitlab-ce!19706

Typo fix

See merge request gitlab-org/gitlab-ce!19720

Rails5 fix expected `issuable.reload.updated_at` to have changed

Closes #47366

See merge request gitlab-org/gitlab-ce!19733

[Rails5] Pass class references instead of strings to middleware builder

See merge request gitlab-org/gitlab-ce!19729

* master:
  Restoring user v3 endpoint
  Resolve "Use one column form layout on Admin Area Settings page"
  Resolve "Participants tooltip is cutoff when too close to the window edge"
  Fix group member filter layout
  Align nav bar items
  Fix labels too large
  Added with_statsoption for GET /projects/:id/repository/commits
  Fixed IDE jobs empty state showing when loading
  Fixes Microsoft Teams notifications for pipeline events
  Migrate compare_source_branch to use only Gitaly
  Clean up stale Prometheus metrics in before_exec unicorn hook
  Remove top padding from .col-form-label

Resolve "`MigrateUploadsWorker` is doing N+1 queries on migration"

Closes #47408

See merge request gitlab-org/gitlab-ce!19547

Migrate compare_source_branch to use only Gitaly

Closes gitaly#771

See merge request gitlab-org/gitlab-ce!19700

Restoring user v3 endpoint

Closes #47565

See merge request gitlab-org/gitlab-ce!19661

Resolve "Microsoft Teams notification for pipelines do not work"

Closes #42342

See merge request gitlab-org/gitlab-ce!19632

Added with_stats option to GET /projects/:id/repository/commits (API)

See merge request gitlab-org/gitlab-ce!19484

Resolve "Use one column form layout on Admin Area Settings page"

Closes #44674

See merge request gitlab-org/gitlab-ce!19673

Signed-off-by: Rémy Coutable <remy@rymai.me>

Signed-off-by: Rémy Coutable <remy@rymai.me>

It fixes Rails 5.0 deprecation flooding like:

```
DEPRECATION WARNING: Passing strings or symbols to the middleware builder is deprecated, please change
them to actual class references.  For example:

  "::Gitlab::Middleware::ReadOnly" => Gitlab::Middleware::ReadOnly

 (called from <top (required)> at /builds/gitlab-org/gitlab-ce/config/environment.rb:11)
DEPRECATION WARNING: Passing strings or symbols to the middleware builder is deprecated, please change
them to actual class references.  For example:

  "ActionDispatch::Static" => ActionDispatch::Static

 (called from <top (required)> at /builds/gitlab-org/gitlab-ce/config/environment.rb:11)
DEPRECATION WARNING: Passing strings or symbols to the middleware builder is deprecated, please change
them to actual class references.  For example:

  "Gitlab::Testing::RequestBlockerMiddleware" => Gitlab::Testing::RequestBlockerMiddleware

 (called from <top (required)> at /builds/gitlab-org/gitlab-ce/config/environment.rb:11)
DEPRECATION WARNING: Passing strings or symbols to the middleware builder is deprecated, please change
them to actual class references.  For example:

  "ActionDispatch::Static" => ActionDispatch::Static

 (called from <top (required)> at /builds/gitlab-org/gitlab-ce/config/environment.rb:11)
DEPRECATION WARNING: Passing strings or symbols to the middleware builder is deprecated, please change
them to actual class references.  For example:

  "Gitlab::Testing::RequestInspectorMiddleware" => Gitlab::Testing::RequestInspectorMiddleware

 (called from <top (required)> at /builds/gitlab-org/gitlab-ce/config/environment.rb:11)
```

Resolve "Groups > Members > No padding between dropdowns/input"

Closes #46702

See merge request gitlab-org/gitlab-ce!19724