Using the sed script from
https://gitlab.com/gitlab-org/gitlab-ce/issues/59758

These are not required because MySQL is not
supported anymore

Add a check for logged out user in the manual order
so that they don't see an flash message when they try to
reorder issues.

A valid user needs to be signed in, and we need to reload the page to
verify that the issue list was saved on the backend.

On all the issue lists -- Group, Project and Dashboard -- this
change adds a new option for managing the lists.

"Manual Ordering" option is added which when flipped on will allow
an user to drag and drop issues around to create a relative ordering
among them.

System hooks were not being triggered when projects were archived or
unarchived. Reuse the Projects::UpdateService to automatically
trigger system hooks and increase code reuse.

https://gitlab.com/gitlab-org/gitlab-ce/issues/23036

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

Closes #29490

Honour issue and merge request visibility in their respective finders

This MR fixes a security issue with the IssuesFinder and MergeRequestFinder where they would return items the user did not have permission to see. This was most visible on the issue and merge requests page for a group containing projects that had set their issues or merge requests to "private".

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/22481

See merge request !2000