These are not required because MySQL is not
supported anymore

- Adds an endpoint on PipelinesController
- Adds a service that iterates over every build in a stage and
plays it.
- Includes 'play_manual' details on EntitySerializer
- Builds a new Stage state: PlayManual. An stage can take this status if
it has manual builds or an skipped, scheduled or manual status
- Includes FE modifications and specs

Add spec

Fix

Fix

Add changelog

Drop attached

Remove attached

Update changelog

ok

Make it sane

Include merge ref head

Fix union

Improve a bit

Add spec

remove

add spec

Add changelog

fix coding offence

Apply suggestion to spec/models/merge_request_spec.rb

ok

ok

Fix

Fix spec

Fix spec

fix

Simplify the things

Memoize

OK

a

Add preload

Fix

ok

Write tests

test only postgresql

ok

add more test
;

Improve wording

Add changelog

Fix

Signed-off-by: Rémy Coutable <remy@rymai.me>

This adds a database migration that creates routes for any projects and
namespaces that don't already have one. We also remove the runtime code
for dynamically creating routes, as this is no longer necessary.

the ci status icons are generated client side, wo we don't need the
static files anymore.

This is 36 in CE, and 40 in EE.

Multiple artifacts ee

See merge request gitlab-org/gitlab-ee!3276

Uses `list_commits_by_oid` on the CommitService, to request the needed
commits for pipelines. These commits are needed to display the user that
created the commit and the commit title.

This includes fixes for tests failing that depended on the commit
being `nil`. However, now these are batch loaded, this doesn't happen
anymore and the commits are an instance of BatchLoader.

Two things at ones, as there was no clean way to seperate the commit and
give me feedback from the tests.

But the model Artifact is now JobArtifact, and the table does not have a
type anymore, but the metadata is now its own model:
Ci::JobArtifactMetadata.

So that we cache the result of UserAccess#can_push_or_merge_to_branch?
in RequestStore, avoiding querying ProtectedBranch over and over for
the list of pipelines (i.e. in PipelineSerializer)

I don't think this is ideal because I don't like the idea of
RequestStore in general, but this is the easiest way to cache it
without changing the architecture. In the future we should cache
more explicitly rather than this kind of global store.