Use last_edited_at instead of updated_at for displaying issuable last change

Closes #41247

See merge request gitlab-org/gitlab-ce!16406

Resolve ""Edit" labels in the issuable sidebar are not consistent"

Closes #42190

See merge request gitlab-org/gitlab-ce!16565

Refactor dispatcher project mr creations new path

See merge request gitlab-org/gitlab-ce!16403

Upgraded Karma Dependencies

See merge request gitlab-org/gitlab-ce!16402

Resolve "Comment author link text has a trailing space"

Closes #42186

See merge request gitlab-org/gitlab-ce!16567

Improve MR feature specs and reduce duplication

See merge request gitlab-org/gitlab-ce!13237

Add release added and release backported to CE

See merge request gitlab-org/gitlab-ce!16553

Delete conflicting orphaned routes before validation

Closes #39551

See merge request gitlab-org/gitlab-ce!16242

Reduce UPDATEs for background column type changes

Closes #42158

See merge request gitlab-org/gitlab-ce!16551

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

Add cache clearing documentation

Closes #41940

See merge request gitlab-org/gitlab-ce!16559

Remove unnecessary query from labels dropdown

Closes #37143

See merge request gitlab-org/gitlab-ce!16520

Resolve "Pipeline stages are jumping when dropdown is open"

Closes #41806

See merge request gitlab-org/gitlab-ce!16556

Added dispatcher imports for some project routes

See merge request gitlab-org/gitlab-ce!16389

[ci skip]

Remove IDE option from user preferences

See merge request gitlab-org/gitlab-ce!16454

[ci skip]

Add Git LFS status icon to docs

See merge request gitlab-org/gitlab-ce!16555

Docs: set comments to false on deprecated articles list doc

See merge request gitlab-org/gitlab-ce!16498

[ci skip]

Fix: fix typo  to open source

See merge request gitlab-org/gitlab-ce!16549

Retrieve commit signatures with Gitaly

Closes gitaly#923

See merge request gitlab-org/gitlab-ce!16467

Remove Rugged::Walker from Repository#log

Closes #42089

See merge request gitlab-org/gitlab-ce!16525

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

Merge branch '42172-deprecation-warning-timestamps-was-called-without-specifying-an-option-for-null-in-rails-5-this-behavior-will-change-to-null-false' into 'master'

Resolve "DEPRECATION WARNING: `#timestamps` was called without specifying an option for `null`. In Rails 5, this behavior will change to `null: false`..."

Closes #42172

See merge request gitlab-org/gitlab-ce!16545

Fix spec/migrations/update_upload_paths_to_system_spec.rb to use the :migration metadata

See merge request gitlab-org/gitlab-ce!16546

Prior to this commit we would essentially update all rows in a table,
even those where the source column (e.g. `issues.closed_at`) was NULL.
This in turn could lead to statement timeouts when using the default
batch size of 10 000 rows per job.

To work around this we don't schedule jobs for rows where the source
value is NULL. We also don't update rows where the source column is NULL
(as an extra precaution) or the target column already has a non-NULL
value. Using this approach it should be possible to update 10 000 rows
in the "issues" table in about 7.5 - 8 seconds.

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/42158