don't have leading zero in days and minutes
change to no leading zero on days and months. okay on minutes
fixed typos
Merge branch 'master' of https://github.com/0xdata/h2o
Prevent NPE for the case of 0 rows.
donrun h2o.importFolder example since it fails on windows now.
Merge branch 'master' into cliffc-bugs

Conflicts:
	src/main/java/water/util/ChunkSummary.java