Source arguments
Cleaned job invocation and args init
Added logStart() for GBM, so when the job launches the params are logged.
Fix cut and paste error in logging of ignored columns.
Switched to ignored_cols_by_name for Job arguments
Merge branch 'api-dev' of git@github.com:0xdata/h2o.git into api-dev

Conflicts:
	src/main/java/water/Job.java
Added MultiVecSelectType.
Fixed 404 & 500 HTTP status
Merge branch 'api-dev' of git@github.com:0xdata/h2o.git into api-dev
Merge branch 'master' into api-dev

Conflicts:
	src/main/java/hex/gbm/SharedTreeModelBuilder.java
	src/main/java/hex/glm/GLM2.java
	src/main/java/water/Job.java
	src/main/java/water/Request2.java
	src/test/java/hex/gbm/GBMDomainTest.java
Merged from master.
Fixed merge conflicts for compiles.
This was around the classification tweak in ModelJob and the GLM2 job
control code.
Merge branch 'master' into api-dev
Added test for Job argument parsing
Merge branch 'api-dev' of git@github.com:0xdata/h2o.git into api-dev
Test moved to runit_GBM_ecology.R
Merge branch 'master' into api-dev