Fix for various inconsistencies and errors.

Many statements were lacking proper punctuation, inconsistencies where
entity was being used in one location and living entity was used in
another location, and overal cleanup.
- Param and return are not sentences
- Various other fixes
- More fixes to the JavaDoc
Merge #13

Thanks @AlphaBlend

commit f023f56cf974bb93db80bc39f6393393f18ce3e5
Author: AlphaBlend
Date:   2013-03-25 01:58:58 -0700

- More fixes to the JavaDoc

commit f13382a926dcb9150eebda9edb7d55c25e2e96ee
Author: AlphaBlend
Date:   2013-03-23 23:34:39 -0700

- Param and return are not sentences - Various other fixes

commit 1ac9159e712a5450e810a9abbc8901e343b29201
Author: AlphaBlend
Date:   2013-03-23 23:18:28 -0700

Fix for various inconsistencies and errors.

Many statements were lacking proper punctuation, inconsistencies where
entity was being used in one location and living entity was used in
another location, and overal cleanup.

Conflicts:
	src/main/java/org/bukkit/entity/LivingEntity.java