Add help texts to K8 form fields

Closes #59275

See merge request gitlab-org/gitlab-ce!27274

Fix logic in Api::Internal test

See merge request gitlab-org/gitlab-ce!27193

Allow extra args for helm in Auto-DevOps

See merge request gitlab-org/gitlab-ce!26838

[CE backport] Fix no assignee text in sidebar_spec

See merge request gitlab-org/gitlab-ce!27444

The intention of this test is to ensure that the service class
MergeRequests::PushOptionsHandlerService does not run when the
:mr_push_options feature flag is disabled.

This test was passing, however was not testing what it was supposed to
be!

For one, setting Feature.disable(:feature) in the test does not disable
the feature, as rspec config in spec_helper stubs Feature to make all
features enabled:

https://gitlab.com/gitlab-org/gitlab-ce/commit/3ee48e422defaedd69946c607bd8d3672e510375

So the feature was still enabled in the test.

But this test wasn't failing because unfortunately I had put:

```
expect(MergeRequests::PushOptionsHandlerService).to receive(:new)
```

instead of not_to!

This meant that the `.new` method was being stubbed, so the service
class did not create a MergeRequest, which satisfied the second
expectation.

```
expect(MergeRequests::PushOptionsHandlerService).to receive(:new)
```

Set correct timestamps when creating past issues

Closes #58361

See merge request gitlab-org/gitlab-ce!27406

`None` for assignees

Closes #60599

See merge request gitlab-org/gitlab-ce!27419

Update assignees_spec.js

Update sidebar_spec.rb

Update issues_spec.rb

Test using Git 2.21

See merge request gitlab-org/gitlab-ce!27418

Resolve "Karma failing with MrWidgetAlertMessage when helpPath is provided  Maximum call stack size exceeded"

Closes #60605

See merge request gitlab-org/gitlab-ce!27429

Docs: CI/CD intro - add new illustration + description

See merge request gitlab-org/gitlab-ce!27278

Link to resource label events API

See merge request gitlab-org/gitlab-ce!27412

Create frontend FAQ (documentation)

See merge request gitlab-org/gitlab-ce!26372

Replaced "View file" button with doc-text icon

Closes #59034

See merge request gitlab-org/gitlab-ce!27365

Update merge request widget to accommodate post-merge pipelines

See merge request gitlab-org/gitlab-ce!25983

Fix minor typo in LDAP docs

Closes #60413

See merge request gitlab-org/gitlab-ce!27415

Fix styling for `app/assets/stylesheets/pages/status.scss`

Closes #59929

See merge request gitlab-org/gitlab-ce!26875

Hide overflow in scoped labels

Closes #48431

See merge request gitlab-org/gitlab-ce!27362

Given Rails doesn't use the Git binary anymore, this shouldn't be a
problem.

Backport metrics report type

See merge request gitlab-org/gitlab-ce!26798

Update migration docs

See merge request gitlab-org/gitlab-ce!27261

Docs: Complete "Repository storage" directions

See merge request gitlab-org/gitlab-ce!27346

Resolve "Tooltip for "View file" shows raw HTML"

Closes #60533

See merge request gitlab-org/gitlab-ce!27398

Sets `system_note_timestamp` from `created_at`

Extract move quick action spec to shared example

Closes #59570

See merge request gitlab-org/gitlab-ce!26907

Rewind iid on pipelines

Closes #59362

See merge request gitlab-org/gitlab-ce!26490

Update Node.js to 10.15.3 in CI template for Hexo

See merge request gitlab-org/gitlab-ce!25943

Scoped labels overflew in all the places because of
lack of restriction on `max-width`. This commit introduces
the same limits on width we have inplace for regular labels

This backports the changes from
https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/10452