* upstream/master: (49 commits)
  Implement new system note icons
  Remove tooltip from filtered search user
  Refactor `Admin::LogsController#show`
  Fix a potential timeout in `Gitlab::Logger.read_latest`
  Incorporate DiffService.CommitPatch Gitaly RPC
  Apply feedback
  Fix display of push events for removed refs
  Fix spacing with code block
  Fixes group policy specs on MySQL.
  Stub `ForkedStorageCheck.storage_available?` by default in all specs
  Add `:nested_groups` metadata to two subgroup-related specs
  Fix inability to test some project integrations
  img/merge_request_diff_file_navigation.png
  Merge request diff file navigation
  Raise GC Lease Timeout to 24h
  Use EachBatch concern to loop over batches
  Migration to remove pending delete projects with non-existing namespace
  Update VERSION to 9.6.0-pre
  Update CHANGELOG.md for 9.5.0
  Update form to properly set the path
  ...

Incorporate DiffService.CommitPatch Gitaly RPC

Closes gitaly#463

See merge request !13441

Remove tooltip from filtered search user

Closes #36696

See merge request !13752

Fix displaying events of removed events and events without commit messages

Closes #36685 and #36722

See merge request !13721

Add migration to remove pending delete projects with non-existing namespace

Closes #36541

See merge request !13598

Fix a potential timeout in `Gitlab::Logger.read_latest`

See merge request !13751

Stub `ForkedStorageCheck.storage_available?` by default in all specs

See merge request !13726

Fix inability to test some project integrations

Closes gitlab-ee#3194

See merge request !13729

Disable webpack.optimize because it's breaking karma in EE

See merge request !13720

Implement new system note icons

Closes #33503

See merge request !13673

Fixes group policy specs on MySQL.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/36810

See merge request !13747

Add `:nested_groups` metadata to two subgroup-related specs

Closes #36811 and #36812

See merge request !13746

We should be defining the list of loggers in the controller, not the
view.

If this method was called for a file that didn't exist, we attempted to
first `build` it. But if the file wasn't writeable, such as a symlink
pointing to an unmounted filesystem, the method would just hang and
eventually timeout.

Further, this was entirely pointless since we were creating a file and
then shelling out to `tail`, eventually returning an empty Array. Now we
just skip building it and return the empty Array straight away.

Update Kubernetes install docs

Closes #36779

See merge request !13730

Implement new EE-only system note icons

Closes #3205

See merge request !2713

Resolve "Badges should not be HUGE"

Closes #36496

See merge request !13635

Log Geo file download attempts and status

See merge request !2722

This changes the style of push events that remove tags or branches so
they don't display the commit details. This prevents displaying commit
details such as:

    000000 . --broken encoding

Instead we now simply display the header such as:

    Administrator deleted branch example-branch

This is displayed in the same style as events for newly created
branches/tags.

This commit also ensures that if no commit message is present we simply
don't display anything, instead of "--broken encoding".

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/36685
Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/36722

Fix monaco loader test

See merge request !13682

Remove unneeded sidebar class

Closes #3218

See merge request !2738

Docs merge request diff nav

See merge request !13743

Add `:broken_storage` metadata to examples to disable this behavior only
when necessary.

Prevents these from failing on MySQL.

Closes #36811 and #36812.

Raise Git GC (Housekeeping) Lease Timeout to 24h

See merge request !13719

Enforce namespace of Kubernetes to lowercase

Closes #34762

See merge request !13732