UI Review:

- Treeview needs sortable columns
-- nice to be able to sort by extension
- Treeview needs alternate stripey row entry things
- applications:/// server-settings:/// start-here:/// preferences:///
trash:/// and system-settings:/// don't have descriptions
- Add File type's No Icon doesn't have a mnemonic
--- give it a label and left align it?
- Should use new HIG borderless frame dialog style
- s/Filename extensions:/Filename Extensions
- s/Run in Terminal/Run in a terminal
- Choose a file category needs a window icon
- Should have an 'Add' button
-- not obvious you need to type extension and then hit 'return'
- s/Add:/Extension:/ if 'Add' button is included
- If you add an image to a file type, then go back into the choose image
dialog, unset the image and return, the image is still on the button
- Actions frame is completely non-intuitive
- What does 'Content Loser', 'View as Sample', 'View as Text', 'None' do?
-- potential conflict with panel menu
- Add Service needs a window icon
- Borderless frames
- s/Run in Terminal/Run in a terminal
- s/Program:/Command:=20
-- since you might need to add arguments?
-- consistancy with default applications
- Not sure what 'Custom' is supposed to represent
-- insensitive widget :(