Revert "Merge pull request #5 from candrews/patch-1"

This reverts commit e47fc85f1ee578095f752eedaf6f55645f1613a1, reversing
changes made to 74cd100d31b7bcc0cd5ecc82544d610d2d7dd5f8.
update ehcache version to 2.4.8
update hibernate version to 4.3.4.Final
use hibernate-validator version 5.0.3.Final
- hibernate-validator version is not the same as hibernate version
- it just happened to be the same as hibernate version when version was 4.3.1.Final
- dependency from g-d-m's hibernate4 was 5.0.1.Final before this change