Set the default time zone to UTC (reported by marcelstoer).
Merge pull request #1 from marcelstoer/master

Add missing ',' in array initialization.
Fixed some missing characters in the comments.
FIX: Replaced all \n NNTP line breaks with \r\n (issue #3).
FIX: Enabled short_open_tag PHP option in virtual host config.
Put the user configuration on the ignore list.
FIX: Suppressed error messages in the newsfedd when the cache directory isn't writable.

Those were messing up the XML output of the newsfeeds.
ADD: Dates are now converted to the users timezone or displayed with timezone information.
Removed default timezone since strtotime() is no longer used.
Implemented an incomplete message subscription prototype (issue #4).