Add support for k8s cluster applications - Helm tiller installation

See merge request gitlab-org/gitlab-ce!14908

Revert Auto DevOps gear animation

Closes #39798

See merge request gitlab-org/gitlab-ce!15232

Fixed multi-file editor table cells content width jumping

See merge request gitlab-org/gitlab-ce!15245

Make restoring backup database table warning more explicit

Closes #39903

See merge request gitlab-org/gitlab-ce!15246

Fix commit pipeline showing wrong status

Closes #39878

See merge request gitlab-org/gitlab-ce!15238

Fix spec. spec/serializers/cluster_application_entity_spec.rb and spec/serializers/cluster_entity_spec.rb

don't re-run smart interval callback if there is already one in progress

Closes #38394

See merge request gitlab-org/gitlab-ce!15032

Fix arguments error on Import/Export fetch_ref method

Closes #39541

See merge request gitlab-org/gitlab-ce!15241

issue ordering docs

Closes #39712

See merge request gitlab-org/gitlab-ce!15243

Refactor issuables index actions

See merge request gitlab-org/gitlab-ce!15242

Resolve "Warning icon in jobs dropdown has incorrect style"

Closes #39831

See merge request gitlab-org/gitlab-ce!15221

Fix TRIGGER checks for MySQL

Closes #38372

See merge request gitlab-org/gitlab-ce!15226

Added unit test and updated integration spec to test for this as well.

Multi-file editor fetch log data from a different endpoint

Closes #38360

See merge request gitlab-org/gitlab-ce!15132

Make sure that every job has a stage assigned

Closes #37979

See merge request gitlab-org/gitlab-ce!14724

Resolve "Change default size for GKE cluster creation"

Closes #39649

See merge request gitlab-org/gitlab-ce!15220