Fixes to chrome extension

Fixed a few things to get chrome extension working with soundcloud.
-had to include our own jQuery like we do for youtube,
-had to adjust the api url to hit soundcloud's resolve.json service correctly
-need to use a client id now, so I just set it up using mine for now.

Also did some general cleanup to make it a bit more modular, and put everything into a namespace to help keep the global js namespace clear.
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