Performance stuff: Caching for getsiteinfo function, check before running onepoll.php
reverted a change that wasn't intended to be published yet/Delete thread was missing at Diaspora items.
Merge pull request #1253 from annando/1412-performance-improvement

Performance improvements when polling contacts
Merge remote-tracking branch 'upstream/develop' into 1409-shadow-items
redone the changes I accidentally overwrote ... Me and GIT will never be in love ...