Use a static file header that is not declared as Javadocs.

Also make use of blank lines more liberally.
Merge branch 'master' of git://github.com/SpongePowered/SpongeAPI into config

Conflicts:
	src/main/java/org/spongepowered/api/plugin/PluginContainer.java
Fix formatting issues.

Signed-off-by: Matthew Messinger <mattmess1221@gmail.com>