Change Volley to be less verbose when not compiled in debug
Make Volley use normal String concatenation in ImageLoader.java
The java compiler will make this a StringBuilder if it needs to be.
Volley doesn't call finalize functions inside some classes
Useless synchronized with local only variable
Enable proguard for optimizations and removing dead code
Merge changes nopjmp made.

Conflicts:
	Clover/app/src/main/java/org/floens/chan/service/WatchService.java