[CE] Use presenter for labels in UI

See merge request gitlab-org/gitlab-ce!27374

When rendering a label we want to check 'scoped_label' feature
availability on a project/group where label is being used. For
this reason a label presenter is used in UI and information about
context project/group is passed to this presenter.

Provide a new gitlab:seed:issues task

See merge request gitlab-org/gitlab-ce!27454

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Update proofreader.md - add simplified chinese proofreader

See merge request gitlab-org/gitlab-ce!27568

Support negative matches

See merge request gitlab-org/gitlab-ce!27510

Fix issue with list label text color

Closes #47584

See merge request gitlab-org/gitlab-ce!26794

Add feature flag to disable LFS check

Closes #60588

See merge request gitlab-org/gitlab-ce!27451

This adds support for != and !~ operators
giving more flexibility in comparing values

Add whitespace for list so it renders

See merge request gitlab-org/gitlab-ce!27564

Upgrade Rails to 5.1

See merge request gitlab-org/gitlab-ce!27480

Add auto_ssl_enabled to pages domains

See merge request gitlab-org/gitlab-ce!27304

Make it clearer when CI_MERGE_REQUEST_ variables are available

Closes #60308

See merge request gitlab-org/gitlab-ce!27460

Adds `label_name` back as a scalar param in `IssuableFinder`

Closes #60569

See merge request gitlab-org/gitlab-ce!27507

Update proofreader.md - remove incorrect proofreader and resign

See merge request gitlab-org/gitlab-ce!27567

Update proofreader.md - Request to be proofreader

See merge request gitlab-org/gitlab-ce!27556

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

Externalize some strings in issue page and new issue page

See merge request gitlab-org/gitlab-ce!27529

Don't create a temp reference for branch comparisons within project

Closes #58315

See merge request gitlab-org/gitlab-ce!24038

Remove protected_branch_creation feature flag

Closes #59572

See merge request gitlab-org/gitlab-ce!27543

Exclude ee/bin from Naming/FileName cop

See merge request gitlab-org/gitlab-ce!27488

Bump Sidekiq to 5.2.7

See merge request gitlab-org/gitlab-ce!27512

Resolve EE / CE diff of noteable_discussion

See merge request gitlab-org/gitlab-ce!27562

Resolve "Web IDE template dropdown showing duplicates"

Closes #58252

See merge request gitlab-org/gitlab-ce!27237

This reverts commit 2869a61f3b7aeb8b6d79c74332c93e32cec20caa.

Resolve "Web IDE uploading images shows base64 string"

Closes #59514

See merge request gitlab-org/gitlab-ce!27471

Make swipe view images line up

Closes #58850

See merge request gitlab-org/gitlab-ce!26969

If left without a width/height, swipeFrame goes off track when the image
isn't wide enough to fill the available width. The spaceLeft prevented
reaching the right edge of the image.

add Chinese Simplified(简体中文) proofreader @xiaogang_gitlab

Resignation of Chinese Traditional(繁體中文-台湾) and Chinese Traditional(繁體中文-香港) proofreader positions