Facia tool: bugfixes

* prevent tool links (eg. "logout") being dragged in as snaps. Doh. 
* correctly identify Google result urls, e.g http://www.google.co.uk/?url=http://www.theguardian.com/foo/bar 
* show "Loading.." as an article's headline, while it loads from capi.
`.indexOf('http://www.theguardian.com/') === 0`