This backports all EE schema changes to CE, including EE migrations,
ensuring both use the same schema.

== Updated tests

A spec related to ghost and support bot users had to be modified to make
it pass. The spec in question assumes that the "support_bot" column
exists when defining the spec. In the single codebase setup this is not
the case, as the column is backported in a later migration. Any attempt
to use a different schema version or use of "around" blocks to
conditionally disable specs won't help, as reverting the backport
migration would also drop the "support_bot" column. Removing the
"support_bot" tests entirely appears to be the only solution.

We also need to update some foreign key tests now that we have
backported the EE columns. Fortunately, these changes are very minor.

== Backporting migrations

This commit moves EE specific migrations (except those for the Geo
tracking database) and related files to CE, and also removes any traces
of the ee/db directory.

Some migrations had to be modified or removed, as they no longer work
with the schema being backported. These migrations were all quite old,
so we opted for removing them where modifying them would take too much
time and effort.

Some old migrations were modified in EE, while also existing in CE. In
these cases we took the EE code, and in one case removed them entirely.
It's not worth spending time trying to merge these changes somehow as we
plan to remove old migrations around the release of 12.0, see
https://gitlab.com/gitlab-org/gitlab-ce/issues/59177 for more details.

This is necessary for backporting the EE schema to ensure backported
foreign keys use the same key names.

Create models for issue trackers data

See merge request gitlab-org/gitlab-ee!14187

Docs for Web IDE file sync

See merge request gitlab-org/gitlab-ce!29638

Docs for Merge Trains

See merge request gitlab-org/gitlab-ce!29047

Fix GPG signature verification with recent versions of GnuPG

Closes #58747

See merge request gitlab-org/gitlab-ce!29388

Resolve "Display and logic improvements for cycle analytics"

Closes #30138

See merge request gitlab-org/gitlab-ce!29018

Fix plan stage query and the way it is displayed

EE backport for Resolve "Display and logic improvements for cycle analytics"

See merge request gitlab-org/gitlab-ee!14143

Work around missing pagination headers

See merge request gitlab-org/gitlab-ee!14142

The backend currently is not sending the expected pagination headers
necessary for the pagination UI in the Dependency List[0].

This change works around that. It:

 - fetches the full, un-paginated list of dependencies on load, to find
   out the total number of them (this information is sufficient to build
   the pagination UI);
 - persists/updates the current page number in the store, rather than
   based on the (missing) response headers.

This should be reverted once the fix[1] for the backend is merged,
though there shouldn't be any problem with them coexisting; the frontend
will then simply be making one unnecessary request.

[0]: https://gitlab.com/gitlab-org/gitlab-ee/issues/10075
[1]: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/14115

CE backport for gitlab-ee!13894 (Save repository_type to LfsObjectsProject)

See merge request gitlab-org/gitlab-ce!29179

Save repository_type to LfsObjectsProject

See merge request gitlab-org/gitlab-ee!13894

Preventing blocked users and their PipelineSchdules from creating new Pipelines

Closes #47756

See merge request gitlab-org/gitlab-ce!27318

preventing blocked users and their PipelineSchdules from creating new Pipelines

See merge request gitlab-org/gitlab-ee!13961

- create tables for storing issue trackers properties
- add model and basic logic & spec

# Conflicts:
#	db/schema.rb

Turn single line code into blocks to improve documentation readability

Closes #62506

See merge request gitlab-org/gitlab-ce!29693

To improve doc readability.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/62506

Master i18n

See merge request gitlab-org/gitlab-ce!29723

New Crowdin translations

See merge request gitlab-org/gitlab-ee!14167

Align Container Registry API Delete Permissions with UI

See merge request gitlab-org/gitlab-ce!29512

This brings the API permissions in line with the UI permissions

It explains what is Merge Trains, how to enalbe it and
its limitations.

Resolve "Docker registry date not accurate"

Closes #35428

See merge request gitlab-org/gitlab-ce!29464

Backporting required template form on admin CI/CD

See merge request gitlab-org/gitlab-ce!29154

Enforce template inclusion in pipelines (FE)

See merge request gitlab-org/gitlab-ee!13923