1.2.rev102

###### summary: a lot of work focused on the build rows

### options.css
* increased opacity of changer icon
* changed current-build-used to be grayed out instead

### xpcom.js
* not re-building dev build rows if json didn't change, this allows to
maintain the toggled icon to custom as that is not saved right away
* hooked up deleting row
* hooked up setting current build