fixed test
fixed test

fixed test TiddlySpaceTiddlerIcons: areIdentical
where one tiddler has a field the other tiddler doesn't the function previously
reported that they were not identical.

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