enclose floating elements in public feeds

http://tt-rss.org/forum/viewtopic.php?f=10&t=2670&p=15780#p15780
Merge pull request #323 from levito/patch-6

enclose floating elements in public feeds
do not unpack all visible headlines in collapsed mode because those are unpacked on expand
add af_fsckportal
only try to set fucking cookie jar if open_basedir restriction is not in effect
Merge remote-tracking branch 'origin/master' into fixccache