Previously the merge request widget would use the `updated_at` date as
the tooltip text for both closed & merged states. This is incorrect as
the `updated_at` date is actually changed when a user updates merge
request through commenting, description changes or anything else.

The widget states for merged & closed events now use their own event
object which holds their own `updated_at` date string. Also this text
has been correctly formatted through our date utilities to correctly
display the right timezone data in a user friendly way.

Closes #38545

Remove target dd

Closes #38485

See merge request gitlab-org/gitlab-ce!14558

Add active states to nav bar counters

Closes #37335

See merge request gitlab-org/gitlab-ce!14569

Fixes data parameter not being sent in ajax request for jobs log

Closes #38528

See merge request gitlab-org/gitlab-ce!14564

Guidelines for illustrations

See merge request gitlab-org/gitlab-ce!13097

Migrate Gitlab::Git::Repository#add_tag to Gitaly

Closes gitaly#601

See merge request gitlab-org/gitlab-ce!14500

Closes gitaly#601

Migrate Git::Repository#rm_tag to Gitaly

Closes gitaly#562

See merge request gitlab-org/gitlab-ce!14388

Closes gitaly#562

RepoEditor: Prevent extra network call for already opened files.

Closes #38256

See merge request gitlab-org/gitlab-ce!14489

Docs: Feature overview and use cases

Closes #38076

See merge request gitlab-org/gitlab-ce!14538

Docs: crosslink Pages guides

Closes #38427

See merge request gitlab-org/gitlab-ce!14542

Clear merge requests counter cache after merge

Closes gitlab-ee#3573 and #38344

See merge request gitlab-org/gitlab-ce!14563

Hashed storage migration path

Closes gitlab-ee#3118

See merge request gitlab-org/gitlab-ce!14067

Use relative paths for opening and closing issuables

Closes #35822

See merge request gitlab-org/gitlab-ce!14555

Support custom attributes on users

See merge request gitlab-org/gitlab-ce!13038

Document the usage of the Docker OverlayFS driver for every build

See merge request gitlab-org/gitlab-ce!14478

Before this change, the MR counter in the sidebar would be wrong if an MR had
been merged since the last update, but not opened or closed, as merging did not
trigger a counter cache update.

Changed account confirmation line to e-mail text.

Closes #13637

See merge request gitlab-org/gitlab-ce!14243

Fix spelling of occurred

See merge request gitlab-org/gitlab-ce!14488

Make sure API responds with 401 when invalid authentication info is provided

Closes #38438

See merge request gitlab-org/gitlab-ce!14525

Test for what should not be there as well

[ci skip]

See merge request gitlab-org/gitlab-ce!14492

Resolve "NoMethodError: undefined method `sha' for nil:NilClass"

Closes #38319

See merge request gitlab-org/gitlab-ce!14547

The abuse reports need a full issuable URL, but linking to issuables
should use the relative paths

This is used in EE for the storage migration, and we want to use this
in CE as well to be able to migrate projects to hashed_storage.