Fix params extraction from location hash
Fix params extraction from location hash

The current code broke applications that use hash navigation. For example, if I access my application with url http://toto.org/#settings, #settings is extracted by extractParams and the hash cleared, so my application never get it.
So I think that if hash is not of the form key=val&…, we should ignore it.

mcanthony/remotestorage.js,remotestorage/remotestorage.js,mcanthony/remotestorage.js,lewisl9029/remotestorage.js,theWebalyst/remotestorage.js,remotestorage/remotestorage.js,remotestorage/remotestorage.js,lewisl9029/remotestorage.js,theWebalyst/remotestorage.js,untitaker/remotestorage.js,untitaker/remotestorage.js