Prepare 10.4.1 release

See merge request gitlab-org/gitlab-ce!16629

Resolve "Spec failure in ./spec/features/issues/spam_issues_spec.rb"

Closes #42361

See merge request gitlab-org/gitlab-ce!16671

(cherry picked from commit a403011e)

c0d7dd38 Workaround a recaptcha pop-up that cannot be tested

Vendor 10.4 Auto DevOps template

See merge request gitlab-org/gitlab-ce!16639

Resolve ""This job has not been triggered yet"  after hitting "Retry""

Closes #42119

See merge request gitlab-org/gitlab-ce!16583

(cherry picked from commit b472411e)

a1f7b2bc Do not render non triggered empty state for pending jobs
30cfcd5a Update tests
63b93664 Adds information for pending state
4b8004c7 Improve pending case test
c414ab84 Improve copy for the pending state

Resolve "Cannot change project visibility from Private (even when owner)"

Closes #40612

See merge request gitlab-org/gitlab-ce!16595

(cherry picked from commit 4bf2fded)

94f31ccc fix issue in which projects which have forks cannot be changed from private to public
1eefc384 add CHANGELOG.md entry for !16595
003f140c ensure fork_source returns nil when project is the root fork, add tests
96862096 add test to can_change_visibility_level? method
de4993d4 remove redundant forked? check
2c1d7c09 fix spacing and wrap method params in parens

Add confirm when navigating away from page

Closes #42102

See merge request gitlab-org/gitlab-ce!16518

WebIDE: Fix Commit bugs

See merge request gitlab-org/gitlab-ce!16459

Add more info on how DAST works

See merge request gitlab-org/gitlab-ce!16615

Fix Error 500 when repository has no avatar

Closes #42249

See merge request gitlab-org/gitlab-ce!16601

Resolve "MR widget components have different icons in CE and EE"

Closes #42225

See merge request gitlab-org/gitlab-ce!16587

Fix filtering projects & groups on group pages

Closes #40785

See merge request gitlab-org/gitlab-ce!16584

Add docs for playing a CI pipeline schedule

See merge request gitlab-org/gitlab-ce!16568

Correctly escape UTF-8 path elements for uploads

Closes #42159

See merge request gitlab-org/gitlab-ce!16560

Add cache clearing documentation

Closes #41940

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

Add release added and release backported to CE

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

Remove unnecessary query from labels dropdown

Closes #37143

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

Improve Clusters documentation

See merge request gitlab-org/gitlab-ce!16435

Delete conflicting orphaned routes before validation

Closes #39551

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

rework indexes on redirect_routes

See merge request gitlab-org/gitlab-ce!16211

[ci skip]

Prepare 10.4 RC8 release

See merge request gitlab-org/gitlab-ce!16557

Reduce UPDATEs for background column type changes

Closes #42158

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

(cherry picked from commit 792e9ed7)

0054d383 Reduce UPDATEs for background column type changes

See https://gitlab.com/gitlab-org/release/tasks/issues/45#note_55157005

Bad commit: https://gitlab.com/gitlab-org/gitlab-ee/commit/ce872e0168
What it should look like:
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/16506/diffs

Remove IDE option from user preferences

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

(cherry picked from commit e56bcf92)

af79397f Remove IDE option from user preferences
18abb303 remove specs

Add Git LFS status icon to docs

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

(cherry picked from commit 0392b0a9)

de2cb24f Add Git LFS status icon to docs

Fix Mermaid drawings not loading on some browsers

Closes #42052

See merge request gitlab-org/gitlab-ce!16537

(cherry picked from commit 50a64953)

b1261ad9 Fix Mermaid drawings not loading on some browsers

Remove soft removals related code

Closes #37447

See merge request gitlab-org/gitlab-ce!15789

(cherry picked from commit 7acabf7c)

d0b8f536 Remove soft removals related code
e5c49b57 Added tests for removing soft removed objects

Prepare 10.4 RC7 release

See merge request gitlab-org/gitlab-ce!16519

Merge branch '10-4-stable-prepare-rc7' of gitlab.com:gitlab-org/gitlab-ce into 10-4-stable-prepare-rc7