Replace last two check-ins, which were reverted (somehow I couldn't get svn diff...

Replace last two check-ins, which were reverted (somehow I couldn't get svn diff -c or svn merge to work, kept asking for my passphrase repeatedly and did nothing).  They made the colon and space part of the category link.  Instead, use a colon-separator message.  Really I'd like to have per-use messages for punctuation like this, since colons are used in lots of different contexts, but others don't seem to like that.