OmniSwitch: new launcher icons

Credits to Adriano Loiacono
https://plus.google.com/u/0/+AdrianoLoiacono/posts/CtMKksg7hGB

Change-Id: I7675ed54beacf9919b8fdb1629deb556244fec62
Merge "OmniSwitch: new launcher icons" into android-4.4
Merge branch 'android-4.4' of https://github.com/omnirom/android_packages_apps_OmniSwitch into android-4.4