Add support for standardized response(s) in FrameTask.
Make regression work for NN.
Note: Uses standardized response for better numerical stabilty and convergence.
Fix D3 plot for regression.
Add input for stopping criteria for NN (regression and classification).
Fix Iris2 NN JUnit test (was stopping early at 0% error, while reference was not).
Merge branch 'master' of https://github.com/0xdata/h2o