Fix #1965

Fix #1965

The hyperlink and the display name of the branch if the branch is in a folder or the branch name has '#'

This is the old naming of the variable and I forgot to fix it. It now
works and is tested.

This allows the admin to disable the version information about gogs and
go in use in the footer.

- copy link button: #1396, #1168, #1668,
- synxtax highlight: #1712, #1549, #1315, #670
- z-index: #1942