Before the push git would make a call to
`/:namespace/:project/git-receive-pack`. This would perform an access
check without a ref. So the `Project#branch_allows_maintainer_push?`
would return false.

This adjusts `Project#branch_allows_maintainer_push?` to return true
when passing no branch name if there are merge requests open that
would allow the user to push.

The actual check then happens when a call to
`/api/v4/internal/allowed` is made from a git hook.

Resolve "Uploads specs are failing on master"

Closes #47684

See merge request gitlab-org/gitlab-ce!19638

Fix IDE pipelines eTagPoll not stopping

Closes #47678

See merge request gitlab-org/gitlab-ce!19636

Update installation from source guide

See merge request gitlab-org/gitlab-ce!19320

Set `max_old_space_size` option of node to 3.5GB during compile:assets

See merge request gitlab-org/gitlab-ce!19624

Prevent ENV from leaking variables in CI output

See merge request gitlab-org/gitlab-ce!19607

Use Tooltip component in MrWidgetAuthorTime vue component

See merge request gitlab-org/gitlab-ce!19635

Avoid checking the user format in every url validation

Closes #47526

See merge request gitlab-org/gitlab-ce!19575

Hide project name if searching against a project

See merge request gitlab-org/gitlab-ce!19595

Migrate CycleAnalytics::CommitCount to Gitaly

Closes gitaly#1215

See merge request gitlab-org/gitlab-ce!19481

[Rails5] Add missing `:comment` attribute

Closes #47650

See merge request gitlab-org/gitlab-ce!19612

Resolve "Table on Failed Jobs tab is overflowing in IE11 and sm screens"

Closes #47679

See merge request gitlab-org/gitlab-ce!19637

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

Closes #47678

Don't use Gitlab::Utils.nlbr in Gitlab::Git

See merge request gitlab-org/gitlab-ce!18335

Move gitaly_blame,  gitaly_count_commits, gitaly_commit_count to opt-out

See merge request gitlab-org/gitlab-ce!19591

Update rspec to 3.7

See merge request gitlab-org/gitlab-ce!19449

Enable mapping to nil in enums

Closes #47032 and #46279

See merge request gitlab-org/gitlab-ce!19288

Resolve "`TimeTrackingComparisonPane` vue component tech debt"

Closes #44742

See merge request gitlab-org/gitlab-ce!19593

Remove SCLAU to mirror https://gitlab.com/gitlab-org/gitlab-ee/commit/cd5cef8f84a2b8c58a741e90afec232243a9f3a9

See merge request gitlab-org/gitlab-ce!19621

Upgrade gitlab-markup to fix render issue with reStructuredText

See merge request gitlab-org/gitlab-ce!19596

Update QA deploy key clone test to wait for job traces

Closes gitlab-qa#269

See merge request gitlab-org/gitlab-ce!19557

Add QA test for authorized push to protected branch

See merge request gitlab-org/gitlab-ce!18696

Use nip.io instead of xip.io for jupyter domain suggestion

See merge request gitlab-org/gitlab-ce!19576

Remove SCLAU to mirror https://gitlab.com/gitlab-org/gitlab-ee/commit/cd5cef8f84a2b8c58a741e90afec232243a9f3a9

In Rails 5 IndexDefinition contains also `:comment` attribute.

Bump grape-path-helpers to 1.0.5

See merge request gitlab-org/gitlab-ce!19604