Opraven dotaz pro vyhodnocení, jestli je role požita v procesu

schválení.
closes #125

src/main/java/info/bukova/isspst/services/users/RoleServiceImpl.java

@@ -87,7 +87,7 @@ public class RoleServiceImpl extends AbstractService<Role> implements RoleServic
 	@Override
 	@Transactional
 	public boolean isInWorkflow(Role role) {
-		Query q = dao.getQuery("select count(*) from Workflow where role = :role");
+		Query q = dao.getQuery("select count(rt) from RequirementType rt join rt.workflow w join w.role role where role = :role");
 		q.setParameter("role", role);
 		long i = (Long)q.uniqueResult();
 		return i != 0;