Set claws-mail application icon
Set iceweasel and pidgin camouflage icons
Rename the preparation script that should be run as root
Activate the camouflage for the next session th the script
Set florence tray icon
Render perparation script executable
Adapt gpgApplet tray icon
Merge branch 'bugfix/7325-task-list-icons' into feature/6342-update-camouflage-for-gnome3
Merge branch 'bugfix/7326-systray-icons' into feature/6342-update-camouflage-for-gnome3
Add a patch to test the new features with current greeter

This patch sould be dropen once a version of the greeter inculding it reaches Tails