Add the patch settings-dialog-frame.patch. With the patch,
the settings dialog uses less space, which fits better on
small screens. For example, on a 1024 x 768 screen, the
buttons are now partly visible.

Refreshed appdata.patch
Bumped Standards-Version to 4.5.0
Updated debian/control with debhelper-compat
Deleted debian/compat
Updated debian/copyright

1. Test on a system with a small resolution
2. Check the qterminal settings dialog
3. Install this version
4. Recheck the qterminal settings dialog, ideally the buttons are shown