Handle missing pipeline in merge request widget

Closes #32987

See merge request !12127

Polish sidebar toggle

Closes #28046

See merge request !12242

Drop GFM support for the title of Milestone/MergeReuqest in template

Closes #34309

See merge request !12451

Bump bootsnap to 1.1.1

Closes #34084

See merge request !12425

[ci skip]

Fix an uncaught throw in the ee_compat_check job

Closes #33600

See merge request !12123

Remove unused Gitlab::Git::Commit#to_diff argument

See merge request !12466

Tag a spec as :nested_groups since it fails on MySQL

See merge request !12459

make accepting mrs more prominent

See merge request !12446

Merge branch '34286_add_esperanto_translations_for_cycle_analytics_and_project_and_repository_pages' into 'master'

Add Esperanto translations for Cycle Analytics, Project, and Repository pages

Closes #34286

See merge request !12442

Top navigation redesign

Closes #34022, #34035, #34037, #34038, and #34021

See merge request !12214

Bump premailer-rails gem to 1.9.7 and its dependencies to prevent network retrieval of assets

Closes #34231

See merge request !12456

Add explicit message when no runners on admin

Closes #33846

See merge request !12266

Truncate long job names in environment view; wrap author to next line

Closes #34320

See merge request !12455

Replace 'dashboard/merge_requests' spinach with rspec

See merge request !12440

Fix endpoint not being update correctly

Closes #33546

See merge request !12449

Fix bug where Service `created_at` time was used instead of deployment time.

Closes #33933

See merge request !12395

Update GITLAB_SHELL_VERSION to 5.0.6

See merge request !12450

This was broken by
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/12322.
Signed-off-by: Rémy Coutable <remy@rymai.me>

Since asset compilation was disabled in GitLab 9.3, the premailer-rails gem
would fall back to fetching assets via HTTP(s) since the Sidekiq working
directory was not the Rails root. In some instances, SSL verification would
fail, preventing e-mails from being sent.

premailer-rails 1.9.7 has a fix
(https://github.com/fphilipe/premailer-rails/pull/195) that uses an absolute
directory to load assets from the filesystem so that the assets can be fetched
locally instead of over the network.

Closes #34231

Backport from EE: Introduce #renew for ExclusiveLease

See merge request !12436

Backport from EE: Fixed DestroyService spec to actually test if removal was successful

See merge request !12437

Hint about the wiki page hook actions (doc)

Closes #34242

See merge request !12427

Remove bin/ci/upgrade.rb

Closes #34207

See merge request !12414

Fix click not being able to find the current element to use trigger('click') instead

Closes #34302

See merge request !12447

Drop GFM support for issuable title on milestone

Closes #34289

See merge request !12444

Change composer update to install to follow PHP/composer best practice

See merge request !12400

Revert "Annotate" to "Blame"

See merge request !12401

Suppress Vue tips when running Karma

See merge request !12379