- Avatar, group name, and group description now left-aligned
- Notification setting and "New project" CTA right-aligned
  with group avatar and name
- Leave group / request access now a link next to the 'Group'
  label below the group name
- Notification setting label removed in favor of icons
  - Tooltip added to indicate notification setting
- Search option moved inside table header next to "Sort by"

Continues the iteration on the project overview UI:

- moved star, fork and new clone button
(copy SSH/HTTPS URLs) to top right,
  made them smaller
- avatar is now larger (64px)
- 'Request access' is now a link instead
  of a button
- overview comes before the description +
  changed styling and added icons
- description font-size is now 16px (large-paragraph)
- quick links to files are moved downwards
  below the commit/pipeline info
- margins changed to group content into
  4 groups to clean up the interface
- visibility info reduced to icon-only and
  moved to the right of the title

Enables frozen string for the following:

* app/controllers/*.rb
* app/controllers/admin/**/*.rb
* app/controllers/boards/**/*.rb
* app/controllers/ci/**/*.rb
* app/controllers/concerns/**/*.rb

Partially addresses #47424.

allowing override for EE.