improve javascript efficiency
Merge branch 'development' of github.com:InformationIntegrationGroup/Web-Karma into development
Change num predictions for ModelLearner to 1 for now. Fix the ChandeInternalNodeLinksCommand to re-use the created nodes.
Merge branch 'development' of github.com:InformationIntegrationGroup/Web-Karma into development
improve efficiency when import worksheet
Clean up codes
Merge remote-tracking branch 'upstream/development' into shri-dm-service