Workaround for likes from Diaspora, disabling of the automatic reload of the network page

* There is the bug that likes from Diaspora aren't accepted due to bad signatures. A solution still isn't found - but admins can now disable the checking of the signature via the .htconfig.php (Value "ignore_diaspora_like_signature")
* By now, the network page automatically reloads every minute. This can be very confusing while scrolling through the content. Users can now disable this functionality. The existing pause button does not help, since it is disabled after every action and had to be activated again.
* It is now possible to access items by the guid (like https://pirati.ca/display/fc9e03004db0da57) When the current user has this item, then the system jumps to this page in the owners profile - otherwise it jumps to the item in the authors profile. This is used in the community page.
* Relocate the site now relocates adresses in the "unique_contacts" table as well.