Allow depth==1
minor fix on summary resampling
GLM1 results now display normalized coefficients as well
modified tutorial doc for R users
Merge branch 'master' of https://github.com/0xdata/h2o
https://0xdata.atlassian.net/browse/HEX-1511
Merge branch 'master' of github.com:0xdata/h2o
Fix numerical stability on perfect prediction.

Turns out a perfect-prediction for 1 class gets a Gamma of 0/0, and a
perfect MIS-prediction gets inf/0.  Distinguish the cases.  Now seeing
iris with large learn-rate stable out to 100,000 trees.
R doc tests
Merge branch 'master' of https://github.com/0xdata/h2o
i
Merge branch 'master' of github.com:0xdata/h2o
Merge branch 'master' of github.com:0xdata/h2o
Fix of HEX-1402. Showing MSE in grid search if DRF/GBM regression is requested.

.
Merge branch 'master' of github.com:0xdata/h2o
edits to clean up recent docs changes
Merge branch 'master' of https://github.com/0xdata/h2o
Add ability to set random seed to RF
Fix for HEX-1509. Add ability to set random seed to RF
Merge branch 'master' of https://github.com/0xdata/h2o
GLM2 now also reports normalized coefficients