Backport mr widget changes from EE

See merge request gitlab-org/gitlab-ce!20598

i18n: externalize strings from 'app/views/admin/groups'

See merge request gitlab-org/gitlab-ce!19924

Resolve "QA: False failure on QA test "Push to protected branch when allowed" during staging failover rehearsal"

Closes #48241

See merge request gitlab-org/gitlab-ce!20561

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

Allow to toggle notifications for issues due soon

Closes #47709

See merge request gitlab-org/gitlab-ce!20530

Signed-off-by: Tao Wang <twang2218@gmail.com>

Vuex test helper improvements

Closes #44912, #44919, and #44920

See merge request gitlab-org/gitlab-ce!20513

[QA] Fix duplicate year in namespace name

See merge request gitlab-org/gitlab-ce!20581

Resolve "Installing helm tiller sometimes fails with no api token found"

Closes #49139

See merge request gitlab-org/gitlab-ce!20580

Fix performance problem of tags query

Closes gitlab-com/infrastructure#4550

See merge request gitlab-org/gitlab-ce!20555

Update CONTRIBUTING.md to port Contribution Flow section from EE doc

See merge request gitlab-org/gitlab-ce!20546

Resolve "Improve performance of MR Changes tab: reduce event listeners on scroll event"

Closes #48639 and #48789

See merge request gitlab-org/gitlab-ce!20558

Remove old service architecture from Vue docs

See merge request gitlab-org/gitlab-ce!20579

Adding spec to test basic forking functionalities

See merge request gitlab-org/gitlab-ce!20097

Resolve "Follow-up from "Milestone tests""

Closes #48690

See merge request gitlab-org/gitlab-ce!20563

Add manifest import

See merge request gitlab-org/gitlab-ce!20304

Add examples for array and hash type API params

See merge request gitlab-org/gitlab-ce!20574

Optimize ProjectWiki#empty? check

See merge request gitlab-org/gitlab-ce!20573

i18n: externalize strings from 'app/views/explore'

See merge request gitlab-org/gitlab-ce!19713

Docs: fix typo on EKS doc

Closes #47421

See merge request gitlab-org/gitlab-ce!20582

Add a fast_timeout for the `ServerService.ServerInfo` endpoint

Closes #49116

See merge request gitlab-org/gitlab-ce!20552

Update project_import_export.md to include example remote import script and additional curl command

See merge request gitlab-org/gitlab-ce!20529

Revert "Log push output on exception" because it is no longer needed

See merge request gitlab-org/gitlab-ce!20564

Match against having letters and numbers for environment name

See merge request gitlab-org/gitlab-ce!20570

Otherwise we ocassionally see a race condition error:

 No API token found for service account "default", retry after the token is automatically created and added to the service account

Waiting 10 seconds should remove this risk.

Remove Repository#path memoization

See merge request gitlab-org/gitlab-ce!20491

Resolve "do not set updated_at when creating note"

Closes #46930

See merge request gitlab-org/gitlab-ce!20322

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

Improvements to new entry dropdowns in Web IDE

Closes #44845

See merge request gitlab-org/gitlab-ce!20526