Model codegen improved

- generation preds[0] for tree models
- generation DOMAINs
- helper method for transforming prediction into class name
Merge branch 'master' of github.com:0xdata/h2o
playing with drf2 and exec2
Merge branch 'master' of https://github.com/0xdata/h2o
Merge branch 'master' of github.com:0xdata/h2o
Fixed logging from jest3s library.

I fixed the same issue already 6months ago,
but some of last changes in build.sh deleted copy
of java/src/resource into h2o.jar.

Hence, jest3s library was not properly configured
and outputed all debug content into logs.
neural nets: pretty print the model page
update runners for Runits
fix
playing with exec2
updates to RUnits
Merge branch 'master' of github.com:0xdata/h2o
add Runits to runner_Runit
Merge branch 'master' of https://github.com/0xdata/h2o
edit path finding to work with Jenkins