Update the `/internal/pages` endpoint to return virtual domain
configuration for custom domains.

This change implements Application
Statistics API

Expose id field in the serializer in order
to store comments content in the localStorage
under the correct key

Modified schema via migrations.
Added one-to-one relationship between the two models.
Added changelog file

This commit adds pipeline.type key to PipelineEntity.
This key will be used in MR widget in the next iteration.

- Extract MR fields for notes into a separate serializer
- Check if pipelines are empty via count

- Edit commit messge body to fix "danger-review"

Instead of `finished_at` attribute use `deployed_at` methods which also
takes into account the deployment status.

Related to https://gitlab.com/gitlab-org/gitlab-ce/issues/56130.

Related to https://gitlab.com/gitlab-org/gitlab-ce/issues/56130.

Splits auto-refreshing of MR widget into 2 requests:

- the one which uses etag-caching and invalidates the fields on change
- the one without caching

The idea is to gradually move all the fields to etag-cached endpoint

These counts significantly increase the load time for these
requests. Users can now opt in to receiving the counts by setting
`with_counts=true` in requests. This is a breaking change, but hopefully
a fairly minor one.

API endpoints for requesting container repositories
and container repositories with their tag information
are enabled for users that want to specify the group
containing the repository rather than the specific project.

Remove project from NotesFinder constructor

Add project parameter to specs

Also look for methods in private scope

Fix specs to match new NotesFinder constructor

This reverts merge request !29733

Add spec for concern IssuableActions

Add shared samples for discussions endpoint

Add schema validations for discussions

Fix rubocop style issue

Make target assignable

Use new possibility to provide target

(cherry picked from commit 1e8bdd01bff96122fe80c51fa8f024f18675b58b)

Add released_at field to releases API
Add released_at column to releases table
Return releases to the API sorted by released_at

This commits extracts /merge_requests/1.json?serializer=widget
Into a separate /merge_requests/1/widget.json endpoint
This will allow to use caching for this request

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/50813

Cleanup IssueBasic entity to keep it basic and move extra attributes
to Issue entity which contains more details

When issues_controller endpoint was used for search, the parameters
passed to the controller were slightly different then the ones
passed to API. Because the searchbar UI is reused in different
places and builds the parameters passed to request in same way
we need to account for old parameter names.


Add issues_statistics api endpoints

Adds issue_statistics api endpoints for issue lists and returns
counts of issues for all, closed and opened states.


Expose more label attributes based on a param

When requesting issues list through API expose more attributes
for labels, like color, description if with_labels_data param is
being passed, avoiding this way to change response schema for users
that already use API.

https://gitlab.com/gitlab-org/gitlab-ce/issues/57402

Add env_var and file as supported types for CI variables. Variables of
type file expose to users existing gitlab-runner behaviour - save
variable value into a temp file and set the path to this file in an ENV
var named after the variable key.

Resolves https://gitlab.com/gitlab-org/gitlab-ce/issues/46806.

This is step one of resolving
https://gitlab.com/gitlab-org/gitlab-ce/issues/56838.

Here is what changed:
- Revert the security fix from bdee9e84.
- Do not leak repository information (tag name, commit) to guests in API
responses.
- Do not include links to source code in API responses for users that do
not have download_code access.
- Show Releases in sidebar for guests.
- Do not display links to source code under Assets for users that do not
have download_code access.

GET ':id/releases/:tag_name' still do not allow guests to access
releases. This is to prevent guessing tag existence.

Only prometheus can be uninstalled atm, the rest will be dealt with
later.

Presumption is that new application types will have uninstallation
implmemented at the same time.

Model.new.attributes now also returns encrypted attributes.

This commit adds two new warning messages to the MR widget that handle
cases involving merge request pipelines.

This is resolving https://gitlab.com/gitlab-org/gitlab-ce/issues/30157.

Implement new API endpoint `/projects/:id/environments/:environment_id`
to expose single environment. Include information for environment's last
deployment if there is one.

Backports https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/10161
(code out of ee/ folder).

Check this feature per project/group instead of globally.
Also do not show tooltip if it's disabled.

Expose head pipeline for the MR in the api when requesting
related merge requests for an issue and show a detailed
status for the pipeline, which would include:
details_path, favicon, group, icon, label, text, tooltip.

https://gitlab.com/gitlab-org/gitlab-ce/issues/57662#note_152023412

Show masked switch for each variable
When toggled on, the variable value will be masked in runner logs
Show warning message if the switch is on but the value is not maskable