Refine MR widget styling for buttons and info text

Closes #32595

See merge request !11548

Fix system note comparison and standardize note setup

Closes #32551

See merge request !11532

Add docs for "Remove Filter in Search Bar"

Closes #32602

See merge request !11541

Resolve "Side by side MR discussion should stretch to max width"

Closes #32556

See merge request !11508

Minor changes to Testing Promises section

See merge request !11517

Fix wording in settings / CI/CD Pipelines

Closes #32555

See merge request !11516

Replaced duplicate z-index with index of 400

Closes #32609

See merge request !11547

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/32551

Enable RSpec profiling only if RSPEC_PROFILING_POSTGRES_URL is not empty

Closes #31933

See merge request !11543

Add descriptions for the RSpec/EmptyExampleGroup and RSpec/ExpectOutput cops

[ci skip]

See merge request !11540

Add note about artifacts previewing in docs

See merge request !11539

Update Prometheus Merge Request widget documentation

Closes #32583

See merge request !11531

Run the schedule worker once an hour by default

See merge request !11476

Add refresh button into MR widget failed state.

Closes #32543

See merge request !11519

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

[ci skip]
Signed-off-by: Rémy Coutable <remy@rymai.me>

Fixes the 500 for custom apearance header logo and logo

See merge request !11479

Remove readme project_view option

See merge request !11425

Render plain README using Markup viewer so it is displayed below tree

See merge request !11510

Consolidate user avatar Vue logic

Closes #31017

See merge request !10718

Fix JavaScript translations that are using a namespace

See merge request !11522

Stop MR conflict code from blowing up when branches are missing

Closes #32544

See merge request !11501

Catch all URI errors in ExternalLinkFilter

Closes #32076

See merge request !11494

Add docs on how to turn off SSL verification on GH oauth

See merge request !11504

Delete merge_request_widget.js

See merge request !11452

In https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/323/ we added support
to disable SSL verification because attempting to import projects from a
self-signed GH Enterprise instance will fail with an SSL error.