fix bug that was allowing Dropbox to attempt installing over top of itself

(which often wasn't successful anyway)
some tweaks to `blogify` to make it work better for BBcode

-	don't use HTML entities for < and > under BBcode
-	fix problems with list generation
--		(pre-existing `[*]`s weren't being treated as boldface, but auto-generated ones were)
need local::lib for new VCtools