Working version without feature engineering, 0.094 LB
again
WIP for Interactions.
Merge branch 'master' into arno-features

Conflicts:
	R/examples/Kaggle/TradeShift.R
Fix PUB-1073: _sparseLen wasn't set when compressing a sparse chunk to an even smaller sparse chunk (when some of the sparse values were 0).
Merge branch 'master' of https://github.com/0xdata/h2o
see if a big timeout on the remove_key() works
skip col 1 in covtype, maybe too slow (altitude)
Merge branch 'master' into arno-features
remote h2o's may or may be started with the -ip specified
add a  force_ip that can be True/False to say whether the ip used to scp the h2o jar over to a machine, should also be passed to h2o when the java -jar h2o.jar xxx happens. Don't want it all the time, so we can test h2o's ability to self identify when remote machine is used
will need it for h2o's on bridged networks, with different public ip (which we already have to know to scp the files) just a question of whether h2o is told also.
Merge branch 'master' of github.com:0xdata/h2o
fix the added network param, for testing -network to h2o
Add mean imputation of training data, based on group-by on response.
Update arguments to DeepLearning.
I had removed that remoteH2O state in local node state because I thought it wasn't needed
it is, but only in the import_parse() which I didn't check. (i.e. any test that was local node only, that did import . Put remoteH2O=false back for LocalH2O state.
Added info needed for submitting bug report to "Send Logs" topic
Added info required for submitting bug report to "Send Logs" topic per Tom
Merge branch 'master' of https://github.com/0xdata/h2o
Use Key.make() instead of hardcoded Last.value.999 to avoid potential race conditions.
Improve performance of Cox PH using Efron's approximation for handling ties.