[PHPiCalendar-DEV] Two bugs I need to fix

[<da...@d2...>]

This is a reminder about two bugs I need to fix (so I don't forget, and in
case I get hit by a bus, other folk are aware)

* $uid definitely needs to be unique, or things get hosed - this is a
simple fix to ical_parser, where if we find a duplicate key, we append
"-2", "-3", etc. to the end until we find a unique key. When/if we do
editing, we'll need a way of finding out the true key.

* Due to the way the range of generated events is created, when doing year
view, it doesn't render out all the events, just the events a month or two
either way. This looks correct if you set $save_parsed_cals to yes, since
it sets up a wider render window by default. year.php should modify the
render window to at least cover the entire year displayed. Should probably
also make sure the rss year feed works.