A couple things:
* bind() is deprecated as of jquery 1.7, use on() instead
* This will only work for elements on the page at the time bind() is called, which means it probably won't work for most of our handlebars templates (or worse, will be a race condition).  If you want it to fire for elements added later, use $.on() to bind a delegated event (see http://api.jquery.com/on/ for details)
* This isn't very reusable.  What if someone wants to add this functionality to an element without adding whatever css rules are attached to button-add-starred?  It's also constraining and brittle, because now we have to be very careful about where we use the button-add-starred class in our html for every page in the app.  A better solution would be to add the anonymous function to the exported object below and put the responsibility of binding it onto someone else who knows how they want to use it (e.g. one of the files in js/cel/pages).  You could also export the default selector class '.button-add-starred' to make it easier for them.