Check mergeability in merge to ref service

See merge request gitlab-org/gitlab-ce!26757

Disable inaccessible navigation links upon archiving a project

Closes #58793

See merge request gitlab-org/gitlab-ce!26020

Document ApplicationRecord / pluck_primary_key

Closes #59690

See merge request gitlab-org/gitlab-ce!26764

Fix bug where clicking file header in diff refreshes page

Closes #57669

See merge request gitlab-org/gitlab-ce!26422

Fix MergeRequest#has_commits? nil comparison

Closes #59547

See merge request gitlab-org/gitlab-ce!26828

Add # frozen_string_literal to spec/models

See merge request gitlab-org/gitlab-ce!26791

Dry up and remove responsibilities from services

Closes #58646

See merge request gitlab-org/gitlab-ce!26731

- Dry create_service.rb and update_service.rb duplicated code
- Remove known list of applications responsibility from services
- Refactor the complex builders->builder call from base_service.rb

Fix styleling for `app/assets/stylesheets/framework/markdown_area.scss`

See merge request gitlab-org/gitlab-ce!26768

Update lfs_administration.md to add new line in order to have table draw properly

See merge request gitlab-org/gitlab-ce!26827

Display link to next to note in text email

See merge request gitlab-org/gitlab-ce!26695

Fix typo in QA auto_devops spec

See merge request gitlab-org/gitlab-ce!26809

Fix API /project/:id/branches not returning correct merge status

Closes #56250

See merge request gitlab-org/gitlab-ce!26785

add a uniq constraints on issues and mrs labels

See merge request gitlab-org/gitlab-ce!25435

Add no-op license helper to CE

See merge request gitlab-org/gitlab-ce!26723

[CE] - Load 'Gitlab::Jira::Middleware' if it exists

See merge request gitlab-org/gitlab-ce!26665

Loads 'Gitlab::Jira::Middleware' only if it exists
so this initializer can be backported to CE.

and add spec

Add changelog

ok

ok

Clarify that personal access token should be sent as password for authentication.

See merge request gitlab-org/gitlab-ce!22603

Update to the commits.md, more details about how to use the --form method for creating a commit

See merge request gitlab-org/gitlab-ce!26329

Fix example block for mixin from ee-else-ce path

See merge request gitlab-org/gitlab-ce!26808

Remove executable permission on images

See merge request gitlab-org/gitlab-ce!26800

Update lfs_administration.md to add documentation on Rackspace Cloud Files for...

See merge request gitlab-org/gitlab-ce!26720

Jira Services Doc update to String

See merge request gitlab-org/gitlab-ce!26683

While we debug why this is failing

Revamp how spec verifies proc#call called only once

Also break up long string to be readable

Adds `# frozen_string_literal: true` to spec/models ruby files

Add troubleshooting info for Docker and GitLab Pages

See merge request gitlab-org/gitlab-ce!26662

Clarify onlychanges

See merge request gitlab-org/gitlab-ce!22790