Code review comment for lp://staging/~gary/juju-gui/enableInspectorCancel

*** Submitted:

Hook up cancel buttons in the inspector

This branch simply hooks up the cancel buttons, which thanks to
groundwork from Ben that I worked on in previous branches, is a one
liner for each button.

R=benjamin.saller
CC=
https://codereview.appspot.com/13677044

https://codereview.appspot.com/13677044/