Upgrade GitLab Pages to v1.42.0

See merge request gitlab-org/gitlab!68341

Make notification_email like commit_email

See merge request gitlab-org/gitlab!68204

Update feature_category for PipelinesController#downloadable_artifacts

See merge request gitlab-org/gitlab!66795

ci: Run review-qa-smoke for all scheduled pipelines and review-qa-all for nightly scheduled pipelines

See merge request gitlab-org/gitlab!67028

Print a warning if dependant file doesn't exist

See merge request gitlab-org/gitlab!68392

Update feature_category for project badges

See merge request gitlab-org/gitlab!68212

Always use the newest commit in a branch for push events

See merge request gitlab-org/gitlab!68168

Update index.js to constants.js in Snowplow Micro setup

See merge request gitlab-org/gitlab!68320

Prevent loading of legacy sidebar on epic and graphQL boards

See merge request gitlab-org/gitlab!63712

Log service discovery host list updates

See merge request gitlab-org/gitlab!68300

Reduce N+1 Gitaly queries when publishing multiple draft notes

See merge request gitlab-org/gitlab!68045

We are currently calling
`Discussions::CaptureDiffNotePositionService` for each draft note
being published and results to N+1 Gitaly queries. This is because
we create an instance of that service in `Notes::CreateService`
for each draft note being published and that service is being
  called in that service.

In this fix, we are adding the capability to skip that call so we
can call it within the `DraftNotes::PublishService` instead and
only use a single instance of that service.

Changelog: performance

Clean up docs redirects - 2021-08-18

See merge request gitlab-org/gitlab!68436

Dequarantine file_locking_spec test

See merge request gitlab-org/gitlab!68427

Add escalation status for incident issues

See merge request gitlab-org/gitlab!65206

Applications UI has new Copy button

See merge request gitlab-org/gitlab!68236

Fix new project filter returning too many search results

See merge request gitlab-org/gitlab!68353

Fix adding or updating vulnerability history comments

See merge request gitlab-org/gitlab!68053

Make eslint ignore js files in JH folder when in jh [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!68336

Remove special case for test and staging stages [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!68000

Hide None and Any when filtered token is !=

See merge request gitlab-org/gitlab!68367

Remove broken "default" storage initialiser

See merge request gitlab-org/gitlab!68096

See https://gitlab.com/gitlab-org/gitlab/-/issues/40125

Added guidance for backticks for text

See merge request gitlab-org/gitlab!68420

Small edits to update nav steps

See merge request gitlab-org/gitlab!68323

Update docs lint image

See merge request gitlab-org/gitlab!68344

Add remove_date to redirect files

See merge request gitlab-org/gitlab!68423

In two MRs I forgot the remove_date entry, so the
redirect cleanup automation can't pick up these
redirect files.

Adds list of supported variables for include.ref

See merge request gitlab-org/gitlab!67988

Clean up docs redirects - 2021-08-17

See merge request gitlab-org/gitlab!68334