Maven test support

Updated Maven test dependencies and made some code changes to get tests run and pass. This was a little more intrusive than the original Maven setup - so you might want to look over the commits.

Requirements:
- Mysql needs to be running locally. 
- Databases need to be installed.
- RabbitMQ needs to be running locally.
- LevelDB directories need to exist and be writable.

Details:

- Added test dependencies to each pom.xml file.
- Updated all references to Spring and Hibernate config files to include the "spring" or "hibernate" directory in the file name. E.g., spring/applicationContext-common.xml. Would not work otherwise.

Issues:

- com.saasovation.identityaccess.resource.UserResourceTest - Had to comment out the assertion check in testGetAuthenticUserWrongPassword and testGetNonExistingUser. They expect 404 but get a 500. Added a TODO to investigate. org.jboss.resteasy.spi.UnhandledException: java.lang.AbstractMethodError: javax.ws.rs.core.Response.getStatusInfo()Ljavax/ws/rs/core/Response$StatusType;

- com.saasovation.collaboration.domain.model.calendar.CalendarTest.testCreateCalendar() - does not pass its assertion test when run a second time (works fine the first time). Expected 1 notifications, but handled 7 notifications: [com.saasovation.collaboration.domain.model.forum.PostedToDiscussion, com.saasovation.collaboration.domain.model.forum.DiscussionStarted, com.saasovation.collaboration.domain.model.calendar.CalendarCreated, com.saasovation.collaboration.domain.model.calendar.CalendarEntryParticipantUninvited, com.saasovation.collaboration.domain.model.calendar.CalendarEntryParticipantUninvited, com.saasovation.collaboration.domain.model.forum.PostedToDiscussion, com.saasovation.collaboration.domain.model.forum.PostedToDiscussion] 

Possible next steps:

- Move the LevelDB directories to the target/ directory for testing. this will allow them to be created dynamically without the need for the user to create a /data dir at their root.
- Look into using Maven to set up the MySQL tables for the tests. The user will still need to have MySQL installed - but Maven can do all the db and table creation.
- Fix issues mentioned above.
- Add setup instructions to the README.

Happy to work on these things. Let me know.

M