WebRadio, Cat Avatar Generator, and Sokoban

WebRadio and Cat Avatar Generator are reusing existing generic icons (radio and cat) while the icon for Sokoban was modelled on the original one.

I also have two questions: Should I post these MRs also against the other projects (Ameixa LOS, Ameixa Monochrome) and do I have to update the drawable.xml file (it seems to work without)?