catching datastore exceptions on all cassandra operations, instead of just on writes
clarified Raises docstrings and fixed typos
Merge pull request #564 from shatterednirvana/unavailable-exception-cassandra

Catching Cassandra Exceptions on all DB operations
properly searching through queue.xml in java apps with one or more queues defined
Merge pull request #570 from shatterednirvana/parsing-queue-xml-correctly-for-one-queue

properly searching through queue.xml in java apps with one or more queues defined
Merge pull request #1 from AppScale/testing

Testing