Added permissions check to design management

See merge request gitlab-org/gitlab-ee!10501

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

Add Snowplow support to backend

Closes #8284

See merge request gitlab-org/gitlab-ee!10444

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

Don't allow modification of designs when a project is archived

Changed some variable names

And implement review feedback

Cache some project data in the apollo store

This enables creating, reading and destroying designs for anyone with
developer access and up.

It allows reading designs linked to issues that are readable to the
current user.

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

- create a class for tracking snoplow events
- change FE to use the class NAMESPACE constant

Persist page and date range in Group Security Dashboard URL

Closes #9677

See merge request gitlab-org/gitlab-ee!10402

This follows straight-forwardly from [previous work][1] to persist some
state of the Group Security Dashboard to the URL, and vice versa.

[1]: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/9108

Documentation: added missing } in a json example

See merge request gitlab-org/gitlab-ee!10497

Display link to next to note in text email

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

Display link to each review note in text email

Closes #10220

See merge request gitlab-org/gitlab-ee!10401

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

Notify owner that group is invalid when LDAP "Sync now" fails

See merge request gitlab-org/gitlab-ee!10509