This reverts merge request !10076

The user can create a new directory on a different branch than the
source branch when the branch already exists.

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Closes #29739

fix for render json include leaks

See merge request !2074

With the changes in Gitlab::VisibilityLevel it is no longer needed to
explicit conversion to Integer in the controller itself.

Due to a Rails bug, fetching the application settings from Redis
may prevent the attribute methods from being loaded for the `ApplicationSetting`
model. More details here: https://github.com/rails/rails/issues/27348

There was also a secondary problem introduced by overriding these
association methods which caused all default visibility levels to be
set to `nil`. Before, the previous implementation allowed the string
"20" to be saved as an integer, while now a table lookup happens
before that. We fix this by enforcing the integer value in the
controller and default to PRIVATE.

Closes #29674

Changed it from being json links to normal links & then doing a AJAX request to get the content.

Closes #29624

Added the ability to 'Undo mark all as done' todos marked as complete with 'Mark all as done'
in the 'Todo' tab of the Todo dashboard.
The operation undos only the todo previously marked as done with the 'Mark al as done' button.

This reverts commit 5e966688, reversing
changes made to b35378a9.

When repo and wiki are disabled for a project,
we're showing issues so we'll need to set @issuable_meta_data
otherwise it would be giving nil errors. See:

https://sentry.gitlap.com/gitlab/staginggitlabcom/issues/23106/

* Removes ambiguity when two projects exist with the same name

Do not display a 404, when a user tries to retrieve the raw content of
an LFS file (pointer) if the config option "lfs_enabled" is set to
false. Instead, display the LFS pointer file directly.

Now you can create a new file and select a target_branch != source_branch.
If the file that you want to create already exists on the target branch an error message is shown
A glDropdown is used to select and create a new branch instead of a text field.

See
http://guides.rubyonrails.org/autoloading_and_reloading_constants.html
for more info.
Signed-off-by: NRémy Coutable <remy@rymai.me>

That way the check is the same in the service & the controller

merge_request_for_resolving_discussions ->
merge_request_to_resolve_discussions_of

And deduplicate the finding of MR's & discussions. Now the searching
is done in the service, istead of the controller & the API.

Delegate a discussion in a merge request into a new issue.
The discussion wil be marked as resolved and a system note will be
added linking to the newly created issue.