Dojo charting examples
Plot line chart
Merge branch 'master' into jingxian
Pop-out window for intro video done.
Merge branch 'master' into jingxian
Code review for intro video opening in separate window
Adding perfect node functionality to the model and PM.
Merge remote-tracking branch 'origin/master' into bstrong
Removing console.log used for testing.
Prevent node editor from closing when expression entered but not checked
Merge branch 'master' into joinerr
Working on stopping close with unentered equation.
Code review:  Doesn't work in author mode.
Workaround for equation checking before node editor closing in author mode
Code review for unentered equation on node editor close.
Merge branch 'master' into sachin2