Merge pull request #1 from ngld/develop

Rebase
Unity Launcher integration
Adds a quicklist and a progress bar on the Unity launcher icon. Needs fs2mod-py.desktop to work.
Fix #2
Protocol scheme installation, now for Linux
The protocol installation button should now also appear on Linux, and be able to create the desktop file and add the mime type.
Merge branch 'develop' of https://github.com/Nepenthes/fs2mod-py into develop
Code cleanup (PEP8 conformity, indentation fixes)