Update WorldGuardEntityListener.java . Don't cancel the event if some of block are protected.


- [x] Issue: [TNT Explosion canceled for all blocks if some of them are protected.](http://youtrack.sk89q.com/issue/WORLDGUARD-2932)
- [x] full Java-docs added
- [x] Tabs replaced
- [x] Code tested: Works!
- [x] Target Java 6 for source and compilation
- [x] Don't tagged classes with @author.
- [ ] git rebasing don't work? (I'm new to this - It breaks my code!?)

Sorry for my english, its not my native language.

PS: In the first commit there are unused imports from tests I did. Ignore it ;)