Somehow the d variant was crashing without the WAKELOCK permission, the
OS having invokes something GCM-related. This should ensure nothing
GCM-related can ever happen.
What's here is merged with the main one, so no point in duplicating and
it's just a pain to maintain. Remove as much as possible that's not
unique to the debug variant (crashlytics and wifidirect, basically.)
Crittercism is dropping free support of FOSS apps, so I'm dropping
it. Unfortunatly integration isn't as clean: so far at least I haven't
figured out how to make it possible for others to build the 'd' variant,
which includes Crashlytics, without their having a Fabric API key.
