Removes Java 6 Travis runner

The code doesn't build against Java 6. Also updates the test script to see
if building the code first will sort out the compile failures on Travis.
Tries changing ant target to see if that builds properly
Fixes incorrect references to log4j

For some reason the references to log4j were in the wrong place. Maybe
went wrong when I moved the projects into the Balloon folder?
Fixes incorrect reference to gson
Fixes reference to Mockito
Adds JUnit jar to our 3rdParty directory

Travis had issues finding JUnit otherwise, I guess because it was
included in Netbeans libs instead?
Merge branch 'features/travis-ci'

Gets rid of the change to the test script - "ant test" should still work.
Lets see. :-)