Prepare 10.1 RC1 release

See merge request gitlab-org/gitlab-ce!14847

Fixes from CSS refactor

Closes #39001 and #38939

See merge request gitlab-org/gitlab-ce!14828

Cache issuable template names

See merge request gitlab-org/gitlab-ce!14823

Update image commenting MR link in docs

See merge request gitlab-org/gitlab-ce!14816

Use image-url instead of url so that asset pipeline can do it's thing

Closes #38980

See merge request gitlab-org/gitlab-ce!14799

Developer can create/edit/delete milestones

See merge request gitlab-org/gitlab-ce!14797

Add explicit test to test resolved discussion toggle content

See merge request gitlab-org/gitlab-ce!14796

Fix text for the merge request lock system note

Closes #38941

See merge request gitlab-org/gitlab-ce!14779

Resolve "Superfluous "Export" in "Advanced settings" of project settings"

Closes #38574

See merge request gitlab-org/gitlab-ce!14773

Fix wiki empty page translation namespace not being removed

Closes #38920

See merge request gitlab-org/gitlab-ce!14759

Add image discussion docs

Closes #38879

See merge request gitlab-org/gitlab-ce!14743

Locked issues / mrs docs

Closes #38880

See merge request gitlab-org/gitlab-ce!14770

backport for gitlab-ee!2869

See merge request gitlab-org/gitlab-ce!14505

Resolve "Private Avatars are not CDN compatible"

Closes #38245 and gitlab-com/support-forum#2476

See merge request gitlab-org/gitlab-ce!14443

fix multiple notifications from being sent for multiple labels

Closes #37691

See merge request gitlab-org/gitlab-ce!14798

Make "merge ongoing" check more consistent

Closes #39032

See merge request gitlab-org/gitlab-ce!14825

Update dependencies license list

See merge request gitlab-org/gitlab-ce!14845

Add project fields to import project by url

Closes #39028

See merge request gitlab-org/gitlab-ce!14822

Simplify project page

Closes #37399 and #38839

See merge request gitlab-org/gitlab-ce!14669

fix the import :milestone from adding the group_id

Closes #35580

See merge request gitlab-org/gitlab-ce!14657

Add docs for GKE integration

See merge request gitlab-org/gitlab-ce!14712

Update installation doc for 10.1

See merge request gitlab-org/gitlab-ce!14843

Update templates

See merge request gitlab-org/gitlab-ce!14844

Remove not selector increasing specificity of rules

Closes #38958

See merge request gitlab-org/gitlab-ce!14789

Fix unable to expand text diff discussion comments

Closes #38940

See merge request gitlab-org/gitlab-ce!14792

Move callback route(`google_api/auth/callback`) for Oauth under `-`

Closes #38911

See merge request gitlab-org/gitlab-ce!14802

Fix a feature spec failing only on MySQL

Closes #39003

See merge request gitlab-org/gitlab-ce!14811

Fixes mini graph in commit view

Closes #38534

See merge request gitlab-org/gitlab-ce!14758

CE Backport of "Don't create todos for old issue assignees"

See merge request gitlab-org/gitlab-ce!14765

Don't show an "Unsubscribe" link in snippet comment notifications

Closes #23888

See merge request gitlab-org/gitlab-ce!14764

Make use of a `gitlab-qa-sandbox` group if available

See merge request gitlab-org/gitlab-ce!14682

Fixed default group sort option

Closes #38808

See merge request gitlab-org/gitlab-ce!14728

Fix the number representing the amount of commits related to a push event

Closes #37483

See merge request gitlab-org/gitlab-ce!14103

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

# Conflicts:
#   spec/features/dashboard/group_spec.rb

Create fork networks for root projects that are deleted

Closes #38905

See merge request gitlab-org/gitlab-ce!14752

Replaces `tag: true` into `:tag` in the specs

Closes #37552

See merge request gitlab-org/gitlab-ce!14653