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
daemon: cache parser object while processing a batch of feeds withsame url on first success
report all libxml errors in updater debug output
force utf8 encoding if devforceupdate is on
parser: try to convert non-unicode feeds with specified encoding to utf8
before trying to remove dangling utf8 characters in case of utf8-related
libxml errors because doing so produces garbage content
api: allow sorting headlines by title
add af_threewordphase
pubsubhubbub: use atom rel=self link (when available) when subscribing
to push-enabled feeds
pubsubhubbub: disable feed url checking when subscribing for the time being, expand error messages a bit
quickAddFilter: if text is currently highlighted, use that instead of active article title for placeholder text
getFeedArticles(): Use valid query to get count of matching articles.
Merge pull request #326 from rwetzlmayr/fixes

getFeedArticles(): Use valid query to get count of matching articles.
add workaround for languagedetect idiotic shit of some kind
search to sql: use str_getcsv instead of explode to support quoted long string tokens
fix catchup older than X for labels category
Follow the spec for <media:group>s

Each <media:group> section specifies multiple representations of the
same content.
Merge pull request #327 from lotrfan/media_group

Follow the spec for <media:group>s
syndicated feeds: default to change exported guid