Show collapsible tree on the project show page

Closes #30343

See merge request gitlab-org/gitlab-ce!14055

Add ability to pass class name to spriteIcon helper

Closes #39079

See merge request gitlab-org/gitlab-ce!14855

Fix link to "Job Permissions"

See merge request gitlab-org/gitlab-ce!14896

Remove extra border radius when editing a file

Closes #37978

See merge request gitlab-org/gitlab-ce!14803

Update new project docs

See merge request gitlab-org/gitlab-ce!14893

39035 Move GitLab export option to top of import list when creating a new project

Closes #39035

See merge request gitlab-org/gitlab-ce!14830

Remove banner from pipelines page

Closes #38641, #39051, and #38827

See merge request gitlab-org/gitlab-ce!14849

Remove "boards" from TOP_LEVEL_ROUTES

Closes #39073

See merge request gitlab-org/gitlab-ce!14861

Adds requirements that supports anything in sha params

Closes #26561 and #2709

See merge request gitlab-org/gitlab-ce!14462

Resolve "GitlabUsagePingWorker is not running on GitLab.com"

See merge request gitlab-org/gitlab-ce!14867

Add Performance category to the changelog

Closes #36417

See merge request gitlab-org/gitlab-ce!14865

Upgrading Monaco

Closes #38607

See merge request gitlab-org/gitlab-ce!14629

Add Test::Integration::Mattermost

See merge request gitlab-org/gitlab-ce!14818

Add Gitlab::Git::Env.to_env_hash

See merge request gitlab-org/gitlab-ce!14841

update postgresql requirements

See merge request gitlab-org/gitlab-ce!14885

Resolve "Remove "Build failed" TODO if it has been auto-retried"

Closes #38236

See merge request gitlab-org/gitlab-ce!14869

We can currently reduce the number of times we specify the tag of a
given example group by moving them hoisting them up one level to the
containing `feature`

This was added as part of the previous filtering via RSpec::Config.  It
should have been removed previously as part of moving the logic to
specify the tags we wanted in Specs::Runner

Fix alignment for indeterminate marker in dropdowns

Closes #38963

See merge request gitlab-org/gitlab-ce!14809

Conflict resolution refactor

See merge request gitlab-org/gitlab-ce!14747

Fix diff parser so it tolerates to diff special markers in the content

Closes #34431

See merge request gitlab-org/gitlab-ce!14848

When a build is retried automatically, we close any open todos. However, we do
that _before_ creating a new build failed todo.

To solve this, we check if the build is retried before creating the todo. We
also ensure that the build _instance_ has the correct attribute set, without
needing to reload it from the database.

It's adding additional potentially confusing behaviour to derive test
tagging from the file path, as it's not immediately apparent where that
lives when considering the tests in isolation.  Instead, just explicitly
tag.

* Remove the tagging of examples based on :file_path
* Explicitly tags scenarios as :core, or :mattermost

On GitLab.com, we see that cron jobs sometimes don't run. This appears to be
because the process that polls for current cron jobs only has a 60 second
validity period, so if (for whatever reason) it misses those 60 seconds, we have
to wait until the next execution.

For the usage ping, this is particularly problematic, as that's only scheduled
to run once a week.

Changing it to run for every minute in a 10 minute period should work around
this, if the above diagnosis is correct. The job itself obtains an exclusive
lease for 24 hours, so rescheduling in quick succession is safe.

Fix confusing double usage of 'metadata'

See merge request gitlab-org/gitlab-ce!14871

Here we convert Specs::Runner#rspec to use keyword arguments[1] and pass
named parameters rather than a pre-processed array of cli switches.
This allows parameter to cli logic to live just in Specs::Runner.

[1] https://robots.thoughtbot.com/ruby-2-keyword-arguments

Popen with a timeout

See merge request gitlab-org/gitlab-ce!14872

Docs for Add "implements" to the default issue closing message regex

See merge request gitlab-org/gitlab-ce!14880

Backport a change in milestone_select from EE

See merge request gitlab-org/gitlab-ce!14878

Merge branch 'fix/sm/38960-collect-usage-pings-gcp-cluster-enabled-and-gcp-cluster-disabled-instead-of-gcp-cluster-count' into 'master'

Collect usage pings `Gcp::Cluster.enabled` and `Gcp::Cluster.disabled`, instead of `Gcp::Cluster.count`

Closes #38960

See merge request gitlab-org/gitlab-ce!14807

Include a .hidden directory in pages artifact extraction tests

See merge request gitlab-org/gitlab-ce!14852

Move retry button to sidebar

Closes #27654

See merge request gitlab-org/gitlab-ce!14873