Merge pull request #898 from munnja001/develop-patch-2014-05-07

Prevent ClassCastExceptions in the admin when using Hibernate's @Formula
(cherry picked from commit 6f1e5ce8cde879724a01df8dda3f7e7f39de6d02)
Merge branch 'BroadleafCommerce-3.0.x' into BroadleafCommerce-3.1.x