UI Review:

- Needs a window icon
- HIG borderless/bold labels etc..
- Could the 3 tabs be combined into just one page with (borderless) frames?
(not essential to closing this bug)
- 'Select a Web Browser:' and 'Custom Web Browser:' don't fit well together
- ones a verb and ones a noun
-- s/Select a Web Browser/Select a web browser/
-- s/Custom Web Browser/Use a custom web browser/
- Remove the 'Command:' label, it's not needed
-- or perhaps just move the label and text entry down and indent
-- perhaps add a 'Browse' button?
- s/Start in Terminal/Run in a terminal
-- for consistancy with the Run dialog in the panel
- Properties dialog in Text Editor should be moved into main dialog
- s/This app needs to be run in a shell/Run in a terminal/
- s/This app can open multiple files/Editor can open multiple files/
- s/Select an Editor:/Select an editor:/
- s/Custom Editor/Use a custom editor:/
- s/Select a Terminal/Select a terminal
- s/Custom Terminal/Use a custom terminal/
- s/Gnome Terminal/GNOME Terminal/
- Command label and text entry moved down and indented
- Exec Flag entry is too large
-- doesn't make too much sense, since the user is expected to type %s in
the Web Browser tab? (NB, this is broken anyway - see bug 90592)