Clean up Model comments
First cut of converting Models to Java

Missing some interesting parts, but the basic structure is there.
Merge branch 'master' of github.com:0xdata/h2o
Adding benchmarking scripts.
removed junk csv
Merge branch 'master' of github.com:0xdata/h2o
Removed superfluous arguments in GridSearch page
cleanup of scripts
Merge branch 'master' of https://github.com/0xdata/h2o
Pretty-print GBM model as Java.

Not ready for prime-time yet, missing a bunch of enum mappings, and any
validation
Merge branch 'master' of github.com:0xdata/h2o
updated 2.0 and 3.0 plans
Model-as-Java compiles w/javaassist & javac

Fix some syntax errors & javassist shortcomings.
Generator is more ugly, but can load generated java class now.
Still doesn't run yet... fails the verifier.
Summary2 histogram uses Scott formula again. Add unit tests.
Merge branch 'master' into summary2