added downloads again since github uploads are deprecated cf. https://github.com/blog/1302-goodbye-uploads
Merge branch 'master' of git://github.com/inverse-inc/sogo-connector.tb17
support charset definition in content-type of vcard
place xpi in downloads dir
bump to 17.0.4
added xpi
Merge pull request #3 from LukeOwncloud/master

support charset definition in content-type of vcard