This reverts commit 10b09db4.

Fix showing diff file header for renamed files

Closes #48887

See merge request gitlab-org/gitlab-ce!22089

Upgrade to Babel 7

Closes #43511

See merge request gitlab-org/gitlab-ce!22059

Update Development related gems

See merge request gitlab-org/gitlab-ce!22066

Add gl-button from gitlab-ui

See merge request gitlab-org/gitlab-ce!21941

Merge branch 'ce-7424-create-a-generic-event-listener-for-tracking-clicks-on-gitlab-com' into 'master'

CE port Resolve "Create a generic event listener for tracking clicks on GitLab.com"

See merge request gitlab-org/gitlab-ce!22002

Update CODEOWNERS for FE and .scss

See merge request gitlab-org/gitlab-ce!21913

Upgrade to latest version the following gems:
* Spring
* Bootsnap
* Thin
* webpack-rails
* pry-rails

Add element classes used in ee branch qa-257-group-saml-sso

See merge request https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/22074

QA: Revisit the login page when attempt to retry login

See merge request gitlab-org/gitlab-ce!22061

Uses Vue app to render part of job show page

See merge request gitlab-org/gitlab-ce!22028

Backport of "Use Geo log to remove files when migrated to object storage"

See merge request gitlab-org/gitlab-ce!22049

Fix placeholder note rendering.

Closes #48933

See merge request gitlab-org/gitlab-ce!22078

Moves stages dropdown into the new vue app

See merge request gitlab-org/gitlab-ce!21971

Update `git lfs fetch` command

See merge request gitlab-org/gitlab-ce!22077

Adds Web IDE commits to usage ping

Closes #45016

See merge request gitlab-org/gitlab-ce!22007

[ci skip]

Support db migration and initialization for Auto DevOps

Closes #48004

See merge request gitlab-org/gitlab-ce!21955

Resolve "Blacklist `encrypted_*` columns in gitlab project export"

Closes #52066

See merge request gitlab-org/gitlab-ce!22072

This makes a temporary implementation of the
Web IDE commits counter using Redis while
https://gitlab.com/gitlab-org/gitlab-ce/issues/52096
is being discussed further for a more generic
approach to counters

Merge Request file tree

Closes #14249

See merge request gitlab-org/gitlab-ce!21833

Remove Gitlab::Git::Repository#rugged

See merge request gitlab-org/gitlab-ce!22039

This file tree displays all the diff files in a tree like format
Each file is taken and converted into a tree with folders
Each folder can be toggled open & closed
Clicking a file will scroll to the diff file & highlight with a glow affect

Searching the tree list will search only files & return a list of the
files without any folders

Each file row contains an icon to show changed, new file or deleted
Each row will also contain the added & removed lines count

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/14249

Port Jira integration documentation update to CE

Closes #50505

See merge request gitlab-org/gitlab-ce!22062