Sort DataSet drop-down list on startTime (most recent first)

- Sort DataSet drop-down
- Fix formatting
- Remove deprecated DatabaseException

Changed:
List<DataSet> dataSets = Lists.<DataSet> newArrayList(dataService.<DataSet> findAll(DataSet.ENTITY_NAME));
Into:
List<DataSet> dataSets = Lists.<DataSet> newArrayList(dataService.<DataSet> findAll(DataSet.ENTITY_NAME,
				new QueryImpl().sort(new Sort(Direction.DESC, DataSet.STARTTIME))));