enforce lowercase modifier names.
enforce lowercase modifier names.

In TiddlySpace users have lowercase names. I noticed a few plugins in the system
bag had modifiers such as FND which was throwing 404s on SiteIcons. Prevent this
state from ever occuring.

FND/tiddlyspace,FND/tiddlyspace,TiddlySpace/tiddlyspace,FND/tiddlyspace,TiddlySpace/tiddlyspace,TiddlySpace/tiddlyspace