We don't need baobab.omf.in anymore
Add a link to the list of supported protocols

https://bugzilla.gnome.org/show_bug.cgi?id=670527
Add common problem sections and related pages

Add pages about slow scan and permissions problems.

https://bugzilla.gnome.org/show_bug.cgi?id=670527
Unbreak user help documentation

legal.xml was missing for distribution so help could not be displayed