removed echo from categoryelement (model)
added some langua-gestrings (admin, backend)
removed searchlabel+changed lang.string categoryelement

added/changed for display "no category". it can be used in several views
so prefixed it with global.
removed echo from categories-model (backend)
Merge pull request #663 from JKoelman/master

removed echo, add few languagestrings
renamed language string (venues-view, backend)
added ignore sign for fsockopen (snoopy-class)

by using the ignore sign there will be no error displayed when visiting
the update-check view offline.
added installedversion to stdclass (updatecheck)

when offline there was no reference to installedversion, now there is.
Merge pull request #664 from JKoelman/master

several changes
added postalcode + htmlencode/decode to icaloutput. Ref:#603 + Ref:#654
added postalcode to models category/event/eventslist
Merge pull request #665 from JKoelman/master

ical output changes
Merge branch 'master' of https://github.com/jemproject/JEM-Project