Fix permissions for #658.

Also fix a bug where booleans were getting stored inconsistenly in the config.
Remove the template instance var from the controller.
We've been using delete, not destroy (like CanCan prefers).
Hide group description header when description is empty
Merge pull request #663 from concerto/groupDescription

Hide group description header when description is empty
Restrict screen owners to the current user or groups you have screen admin control in.

Close #658.
Merge branch 'master' of github.com:concerto/concerto
Turn off async airbrake, this doesn't work on the VM.  Close #633.
handle paragraph breaks and remove horizontal rule
Merge branch 'master' of github.com:concerto/concerto
fix #665 remove empty files
#499 handle relative url root
Update Gems for 0.7.0.IndiaIbex.
Bump to 0.7.0.IndiaIbex.
Merge branch 'master' of github.com:concerto/concerto
fix #669 rename concerto_configs group column to category
fix #667 remove min-height styling
mark as script and pull down dependencies
make lintian happier
Fixed login form field widths...again.