MISC: Removing unused Hibernate import

In Grails 2.3.x, this import makes the Hibernate Grails plugin a
required dependency.
Merge pull request #1 from robzienert/bloom-patch

MISC: Syncing personal fork
Merge pull request #3 from robzienert/misc-remove-hibernate-dep

MISC: Removing unused Hibernate import
PE-262: Fixing enabled flag when plugin is compiled