Further automation of Scratchpad signup process (Google API key, ClustrMaps and uBio RSS feeds)

As part of the signup process, new users should be made to get and submit their Google API key (which gets put in the appropriate part of their GMaps module automatically), signup for a clustrMap (we need to give then the URL of their site for this), and sign up for the two uBio RSS feeds and paste these urls into the signup form so their feeds are in place with their new site.

Scratchpads developed and conceived by: Vince Smith, Simon Rycroft, Dave Roberts, Ben Scott...