rearrange the angular controllers (this applies to scanctrl mostly)

[mozfreddyb]

For now we have a Controller for the rules and the Scanning parts, but the Scanning thing is already not really for scanning but for file uploads and other things.

Given that the web ui might become more separated and the scanning might once become async (if we use a Worker, see #7) the AngularJS Controller should probably be rearranged.

Also, AngularJS currently doesnt really handle file uploads, so there's already a workaround. But I think I'd lean towards keeping AngularJS as the framework for now

[mozfreddyb]

fixed once #138 is merged.