Fixes multi-line math in notebooks

Closes #30900 and #33074

See merge request !11789

Consistent diff and blob size limit names

See merge request !11776

Don't match email addresses or foo@bar as user references

See merge request !11837

Resolve N+1 query issue with discussions

Closes #33013

See merge request !11775

Add GitLab Resources to University

See merge request !11832

Introduce source to pipeline entity

See merge request !11682

This reverts commit 0d55def4.

This change continues with the plan to change the parameters passed
around GitLab components to allow for independence of mount points. See
https://gitlab.com/gitlab-org/gitlab-shell/merge_requests/130#note_28747613

# Conflicts:
#   db/schema.rb

Add feature toggles through Flipper

See merge request !11747

Make .gitmodules parsing more resilient to syntax errors

Closes #26009

See merge request !11803

Rename BuildsController to JobsController

Closes #30699

See merge request !11407

Add Documentation for GIT_CHECKOUT variable

See merge request !11748

Update task_list to version 2.0.0

Closes #22470

See merge request !11525

Issue inline editing

Closes #24873

See merge request !11322

Fixed the show_user_callout method

See merge request !11689

Ui improvements for count badges and permission badges

See merge request !11805

* upstream/master: (63 commits)
  Update docs related to protected actions
  Add changelog for protected branches abilities fix
  Ask for an example project for bug reports
  Center loading spinner in issuable filters
  Fix chat commands specs related to protected actions
  Fix builds controller specs related to protected actions
  Fix pipeline retry specs related to protected actions
  Fix environment model specs related to protected actions
  Fix build factory specs related to protected actions
  Fix job play service specs related to protected actions
  Fix play status specs related to protected actions
  Fix deploy chat command specs for protected actions
  Fix environment specs related to protected actions
  Fix pipeline processing specs related to protected actions
  Fix build entity specs related to protected actions
  Check only a merge ability for protected actions
  Add tag_list param to project api
  Allow PostReceivePack to be enabled with Gitaly
  Remove some deprecated methods
  Add :owned param to ProjectFinder
  ...

Improve /project API performance

Closes #31855 and #31937

See merge request !11666

Center loading spinner in issuable filters

Closes #33137

See merge request !11818

Check only a merge ability for protected actions

Closes #32618

See merge request !11648

Ask for an example project for bug reports

See merge request !11819

Add tag_list param to project api

Closes #33000

See merge request !11799

Add API support for pipeline schedule

Closes #30892

See merge request !11307

Allow PostReceivePack to be enabled with Gitaly

Closes gitaly#246

See merge request !11809

* Bugs reported in the GitLab Issue trackers should be reproducible
* Asking reporters to reproduce on GitLab.com is reasonable
  * It lets us know whether the issue still exists in latest
  * It ensures that the steps to reproduce are solid
  * It gives Developers a live example to work from
  * Reporter can verify the fix in the example project once shipped

[skip ci]