Fb javarosa server

The fb-javarosa-server feature branch is a java translation of 

https://github.com/dimagi/touchforms/blob/master/touchforms/backend/xformplayer.py

which manages JavaRosa on the server
Should probably just use a ReentrantLock: http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/locks/ReentrantLock.html