Help popup in userspace - Clears the userspace content behind

[seb-koemei]

The userspace is emptied when the help popup is displayed, then when quitting the popup it stays empty.
The userspace content (vieo list, notes list, ...) should be visible behind the veil and when the help popup is closed.

https://www.dropbox.com/s/ptw8zeo8dq3yq8j/Screenshot%202014-02-18%2014.45.10.png

To reproduce: go to https://www.koemei.com/#help