Remove Google References

This removes most references to:

 - Google Code
 - Google Buzz
 - Google Maps
 - Google Gears
 - General Google services promotion

There are still some remaining Google references, particularly a script within plugins/Minify. You might want to check that to see if it's really necessary and whether the javascript it points to is actually free software.

See merge request !117

This removes most references to Google, with some
remaining since they may point to things which are still
relevant. References to Google Code, Google Buzz and
Google Maps have been removed

I don't know why, but people started following those instructions for no
apparent reason and it ended up causing a bunch of federation issues or
homegrown cron script messes.

Maybe changing the name to "another" instead of "your" domain will make
people stop doing stuff randomly.

We should probably have a separate class for this, so we can more
easily combine different technologies similar to oEmbed/OpenGraph.

I think this solves much of the "third party conversation" issues, assuming involved parties
are using modern GNU social instances.

For some reason they were written to ->object, which is incorrect as
we use the objects[] array (which usually just holds one entry though)

Also move fancyurlfix into site-wide $config['fix']['fancyurls']

TODO: getByUri should make use of this directly I guess?

Evil forms on other websites could otherwise potentially be configured
to have action="https://gnusocial.example/api/statuses/update.json" or
whatever. XHR is already blocked with CORS stuff.

Really, why do browsers allow cross domain POSTs at all? Sigh. The web.

We say the email is private data, so reasonably we shouldn't reveal it
indirectly through a hash sum: http://xmlns.com/foaf/spec/#term_mbox_sha1sum