Replace the metrics dashboard graph with
GitLab UI's area chart component

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

- Long named variable key/values are vertially aligned

- The table width was shrinking with smaller variable names

Renders mode changed and renamed file merge request diff
viewers on the frontend.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/52607

This reverts commit 427c1e72, reversing
changes made to 5aac64a7.

- Fixes linting error around missing key directive

- Horizontall aligns span and button text

- This is needed by the Web Terminal to check environment

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/50662

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/8195

- Removes element in favor of class name
- Adjusts to use existing variables

- Adjusts il8n implementation
- Removes unnecessary type check
- Adjusts to use Vue shorthand directives
- Adjusts class names

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/54868

- Improves spacing between account buttons on Profile
- AccountsController#show uses locals instead of instance variables
- New `display_providers_on_profile?` helper method
- Adds `render_if_exists` for GroupSAMl unlink buttons

See: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/8682