add creating new release guide

fixes for gitlab restore with non-standard backup and repo dirs

Fix abort gitlab:app:check

use git user in check script

Routing fix Commit-List: branch with # and + in name

Open the issue tag list on click

Fix pygment lexer 500 errors when an alias is used instead of a name.

No more separate gitlab user since 5.0.

addresses issue #4156

Fix postgres error when displaying network graph.