GBM predict now produces correct histogram of classes.
Fix of class name in generated code.
Show Model code for all Tree models.
Fix of Java code visitor.

The visitor producing Java code did not handle properly
degenerated tree represented by one leaf.
Ad-hoc class fix of label in UI.

DRFProgress + ModelView reports to be validated on out-of-bag data.
Merge branch 'master' of github.com:0xdata/h2o
Merge branch 'master' of github.com:0xdata/h2o
Make Oracle javac compiler happy.

This is really BUG in Oracle JavaC compiler:
 - original code contains reference from parent class to its ancestors
   (nasty code but only temporary hack for UI)
 - Eclipse compiler resolves circular dependency correctly, but Oracle
   javac fails