general:
 - ui: show message (done)
 - change activity (done)

encryption:
 - initialize mount (done)
 - mount (done)
 - unmount (done)
 - move files to activity
 - move files from activity
 - nepomuk cleanup of enc files metadata
 - remove mount directories

password:
 - new password requesting (done)
 - password requesting (done)

session:
 - chani's kwin session stuff

 TODO:
 - signals when encryption property of an activity changes
