# --not logged user can't see Tiddlywikis--
# --username of a Tiddler must be a string. When a tiddlywiki is uploaded, the modifier should not change.--
# --Error when unlogged user try to edit a Namespace--
# --Error when a not logged user try to delete--
# --a tiddler edit add a new key of this tiddler in tiddlywiki.tiddlers--
# --if a . (dot) in tiddler title or Tiddlywiki name or Namespace name (in url) the dispatcher is unable to handle (it tries a format)--
# if <tiddlywiki_id>.tiddlers isn't clean (some tiddlers don't exist anymore). Format .html is in error 
# <tiddler>.modified could be a string => <tiddlywiki>.xml bugs.
# Bad request when tiddler has a '/' in title
# --Bug in Firefox with external links ????--