Modify(ErrorInterceptor, ValidationViolationsInterceptor, RequestParameterValidatorImpl and UserRegistrationServiceTest): fix imports from com.google.common.collect
Fix(DatastoreTransactionInfoRepository): add missing sorting of query results in implementation of method getTransactionList.
Modify(transactionInfo.spec.js): add test case for sending correct request to server.
Modify(transactionInfo.tpl.html): add radio buttons for selecting result list size.