Refactored activity calendar

See merge request gitlab-org/gitlab-ce!18469

Rename #qa slack channel to #quality in docs

See merge request gitlab-org/gitlab-ce!18472

Check Gitaly when running `rake dev:setup`

See merge request gitlab-org/gitlab-ce!18481

Respect visibility options and description when importing project from template

Closes #42601

See merge request gitlab-org/gitlab-ce!18473

Resolve "Improve tooltips of collapsed sidebars"

Closes #25010 et #44272

See merge request gitlab-org/gitlab-ce!17714

Define priority label for bugs

See merge request gitlab-org/gitlab-ce!18361

Update Container Scanning documentation

Closes #45543

See merge request gitlab-org/gitlab-ce!18479

Resolve "Geo: Statement timeout counting local job artifacts"

Closes #45476

See merge request gitlab-org/gitlab-ce!18444

Fix specifying a non-default ref when requesting an archive using the legacy URL

Closes #45507

See merge request gitlab-org/gitlab-ce!18468

edit GitLab license info so that GitHub recognizes it

See merge request gitlab-org/gitlab-ce!18291

Fix N+1 queries when loading participants for a commit note

Closes #45526

See merge request gitlab-org/gitlab-ce!18471

[Rails5] Fix `User#manageable_groups`

See merge request gitlab-org/gitlab-ce!18330

Fix typo in vue.md

See merge request gitlab-org/gitlab-ce!18411

Fixed IDE diff markers being cached too long

See merge request gitlab-org/gitlab-ce!18311

Added staged files state to IDE

Closes #44842, #44844, and gitlab-ee#4541

See merge request gitlab-org/gitlab-ce!17898

Fix direct_upload for old records

See merge request gitlab-org/gitlab-ce!18360

Old records have a null value of file_store column.
This causes the problems with current direct_upload implementation,
as this makes it to choose Store::REMOTE instead of Store::LOCAL.

This change moves the store save when change saving the object.

Upgrading gitlab-gollum-lib and rouge

See merge request gitlab-org/gitlab-ce!18436

Resolve "Calculating total size of a project's CI artifacts"

Closes #41059

See merge request gitlab-org/gitlab-ce!17839

[Rails5] Avoid type casting in uniqueness validator

See merge request gitlab-org/gitlab-ce!18470

Before this change, trying to setup dev environment could be tried
without having at least one Gitaly running. Cloning the repositories
would fail, but not stop the setup.

Given this would lead to an inconsistent state, a check was added if we
could connect to the server.

Output when it fails:

```
$ rake dev:setup
Failed to connect to Gitaly...
Error: 14:Connect Failed
```

Previously we scheduled a worker to just some this but we were running
into performance issues when the build table was getting too large. So
now we've updated the code such that this column is updated immediately
and incremented/decremented by the correct amount whenever artifacts are
created or deleted.

We've also added the performance optimization that we do not update this
statistic if a project is deleted because it could result in many
updates for a project with many builds.

Fix label links update on project transfer

Closes #44158

See merge request gitlab-org/gitlab-ce!18320

Resolve "Get rid of branch element all in bottom bar in WEB IDE"

Closes #44834

See merge request gitlab-org/gitlab-ce!18367

Resolve "Show `failure_reason` in jobs view content section"

Closes #44271

See merge request gitlab-org/gitlab-ce!17814

Get GITLAB_FEATURES from Project#licensed_features instead of Namespace#features (#5320)

See merge request gitlab-org/gitlab-ce!18189

We saw about 10,000 SQL queries for some commits in the NewNoteWorker,
which stalled the Sidekiq queue for other new notes. The notification
service took up to 8 minutes to process the commits. Avoiding this
N+1 query brings the time down significantly.

Closes #45526

In `arel 7.0` (`7.1.4` version is used for rails5) there were introduced
some changes that break our code in the `User#manageable_groups` method.

The problem is that `arel_table[:id].in(Arel::Nodes::SqlLiteral)` generates
wrong `IN ()` construction. The selection for `IN` is missing:

=> "\"namespaces\".\"id\" IN (0)"

That caused such spec errors for the `rails5` branch:

```
4) User groups with child groups #manageable_groups does not include duplicates if a membership was added for the subgroup
    Failure/Error: expect(user.manageable_groups).to contain_exactly(group, subgroup)

      expected collection contained:  [#<Group id:232 @group29>, #<Group id:234 @group29/group30>]
      actual collection contained:    []
      the missing elements were:      [#<Group id:232 @group29>, #<Group id:234 @group29/group30>]
    # ./spec/models/user_spec.rb:699:in `block (5 levels) in <top (required)>'
    # ./spec/spec_helper.rb:188:in `block (2 levels) in <top (required)>'
    # /var/lib/gems/2.3.0/gems/rspec-retry-0.4.6/lib/rspec/retry.rb:112:in `block in run'
    # /var/lib/gems/2.3.0/gems/rspec-retry-0.4.6/lib/rspec/retry.rb:101:in `loop'
    # /var/lib/gems/2.3.0/gems/rspec-retry-0.4.6/lib/rspec/retry.rb:101:in `run'
    # /var/lib/gems/2.3.0/gems/rspec-retry-0.4.6/lib/rspec_ext/rspec_ext.rb:12:in `run_with_retry'
    # /var/lib/gems/2.3.0/gems/rspec-retry-0.4.6/lib/rspec/retry.rb:30:in `block (2 levels) in setup'
```

This commit changes `User#manageable_groups` in the way to drop the usage of
`Arel::Nodes::SqlLiteral` and adds usage of raw SQL query.
This change should be updated when we're migrated to Rails 5.2 because arel
was fixed in `9.0.0` (which is used in Rails 5.2).