Import all content from former /debug section into documentation
Problem to solve
Content in the /debug path was hidden and not organized per topic.
Now ready for move to other parts of the doc site, per debugging/debug#12 (closed)
Further details
N/A
Proposal
N/A
Who can address the issue
The Technical Writing team
Other links/references
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/27922