Actions match now either MSGS or PUBLIC level as well as the ACTIONS
level always.
Added DCCMSGS level to default highlight levels. Highlighting works
with other than public messages now even if -nick option is used.
git-svn-id: http://svn.irssi.org/repos/irssi/trunk@463 dbcabf3a-b0e7-0310-adc4-f8d773084564
