Initial introduction of Gitlab::Utils::MimeType class

See merge request gitlab-org/gitlab!57421

Update contribution tooltip font style in contribution calendar

See merge request gitlab-org/gitlab!54765

Add message for repository backup skip

See merge request gitlab-org/gitlab!54285

The backup procedure for repositories will print `[SKIPPED]` for any
repository it finds empty, or non-existent.

To an uninformed user reading just the terminal, the reason for the skip
isn't clear, and it may also be alarming to them.

This commonly applies to the .wiki or .design repos.

This change alters the message to suggest the repository was empty.

Remove hipchat gem, and make HipChat service a no-op

See merge request gitlab-org/gitlab!57434

Docs: Advise about incompatible artifact upload settings

See merge request gitlab-org/gitlab!56858

Add a new service GitlabSubscriptions::CheckLastTermService [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!56235

To be used to query our CustomersDot application to determine
if the current subscription for the given namespace is on it's
last term or not

Migrate wiki edit page to vue

See merge request gitlab-org/gitlab!55936

Create a script to help reconcile and clean up all Gitlab::QueryLimiting.disable references with corresponding issues

See merge request gitlab-org/gitlab!57209

Remove unused GeoGitAccess method

See merge request gitlab-org/gitlab!56902

Quarantine test due to bug

See merge request gitlab-org/gitlab!57437

Edited for style

See merge request gitlab-org/gitlab!57185

Related to: https://gitlab.com/gitlab-org/gitlab/-/issues/300312

This means the HipChat service now no-ops, but this should be OK given
HipChat is un-usable now anyway

- See https://gitlab.com/gitlab-org/gitlab/-/issues/325640
- See https://gitlab.com/groups/gitlab-org/-/epics/5670

Temporarily disable db:migrate-from-v12.10 job

See merge request gitlab-org/gitlab!57423

Updated to show five levels of nav

See merge request gitlab-org/gitlab!57395

Group content editor dependencies in a single chunk

See merge request gitlab-org/gitlab!57164

to mimemagic gem.

A different gem will replace this soon.

E2E to test Group Wiki repository storage move

See merge request gitlab-org/gitlab!56809

See https://gitlab.com/gitlab-org/gitlab/-/issues/300539

Relates to https://gitlab.com/gitlab-org/gitlab/-/issues/325838#note_537126367

Add error for old pipelines

See merge request gitlab-org/gitlab!57259

Includes changes and specs

Track epic title and description changes via usage ping

See merge request gitlab-org/gitlab!56489

Direct readers to Support resources

See merge request gitlab-org/gitlab!57417

Fix epic boards tier in docs

See merge request gitlab-org/gitlab!57404

Fix remote_mirrors usage ping metric

See merge request gitlab-org/gitlab!57332

Move DVCS information to new page

See merge request gitlab-org/gitlab!57410

The DVCS information is large enough that it needs to live in its
own page. Shift information, making as few changes as possible.