Steps to reproduce:

1. Start Workbench cluster
2. kubectl exec into ndslabs-webui container
3. open vi

Actual Results:

• Terminal sizing is all wrong, and cuts off mid-screen
• Some control keys don't work properly in vi (i.e. Command + left/right, Fn + left/right, Shift + left/right, etc)
• Exiting vi can cause all kinds of wacky terminal behavior, including improper sizing

Expected results:

• Terminal experience should feel less fragile

See http://andykdocs.de/development/Docker/Fixing+the+Docker+TERM+variable+issue

Very relevant: https://github.com/kubernetes/kubernetes/blob/master/pkg/api/types.go#L1004-L1006

NOTE: this may also affect user apps started by Workbench, but more investigation would be needed to say for certain