This commit also unifies layout structure
and remove no_container flag

Reuses existing TreeHelper instead of creating a new one just for one
method.

Phil Hughes authored 5 years ago and Filipa Lacerda committed 5 years ago

Part of https://gitlab.com/gitlab-org/gitlab-ce/issues/61578

Signed-off-by: Rémy Coutable <remy@rymai.me>

The 'Create new' dropdown is no longer available on a blank project
so use the 'New file' button instead.

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

Rails is slow to generate paths dynamically especially when called
hundreds/thousands of times. Also, rendering many partials hundreds
of times can be slower. This change reduces the number of partials
rendered and introduces two fast path methods to speed up path
generation.

The short commit message may be truncated making the truncated
portion unreadable. The title of the link should be the commit message
so that the commit message is shown when hovering the commit message
anchor.

Closes gitlab-org/gitlab-ce#42673

The MR below adds a test for the code owners feature. This adds the
part of those changes specific to CE - the ability to add and view
files in a project.

https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/7368

Adds tests that adds new files via file templates via the Files view
and the Web IDE.

Includes changes to page objects and associated code

Fetches template content from the API rather than hardcoding strings
that will need to be updated if the templates change. Some of the
content is stored as flat files but we can't use them because they're
not included in the docker images gitlab-qa uses.