NOJIRA - refactored JpaStorageClient, extracted out utilities into JpaStorageUtils...

NOJIRA - refactored JpaStorageClient, extracted out utilities into JpaStorageUtils so that some of those (getEntity) could be used for validation
DocumentFilter#getQueryParams returns empty list of query para values but not null
test: all tests, account and authorization-mgt

M    account/service/src/main/java/org/collectionspace/services/account/AccountRoleSubResource.java
M    account/service/src/main/java/org/collectionspace/services/account/storage/AccountStorageClient.java
M    account/service/src/main/java/org/collectionspace/services/account/storage/AccountValidatorHandler.java
M    account/service/src/main/java/org/collectionspace/services/account/storage/AccountJpaFilter.java
M    authorization-mgt/service/src/main/java/org/collectionspace/services/authorization/storage/RoleJpaFilter.java
M    authorization-mgt/service/src/main/java/org/collectionspace/services/authorization/storage/PermissionJpaFilter.java
M    common/src/main/java/org/collectionspace/services/common/storage/jpa/JpaStorageClientImpl.java
M    common/src/main/java/org/collectionspace/services/common/storage/jpa/JpaRelationshipStorageClient.java
A    common/src/main/java/org/collectionspace/services/common/storage/jpa/JpaStorageUtils.java
M    common/src/main/java/org/collectionspace/services/common/document/DocumentFilter.java