This beta release of WebGUI 7.9.9 contains fixes for 14 different bugs; Shopping cart,
Trash, Thingy, UTF in emails, Delete Expired Sessions workflow activity, Carousel, User
Profile fields and the Matrix.

Changelog:
 - fixed #11693: Shopping cart does not show for visitor user
 - fixed: missing per-item template variables for the cart.
 - fixed #11696: WebGUI 7.9.8 gotcha
 - fixed #11698: Trash dies on missing or bad workflow
 - fixed #11692: Dates not imported correctly into Thingy
 - fixed #11672: UTF-Error in message body (from DataForm)
 - fixed #11709: Shop - i18n error
 - fixed #11710: Weird license in json.js might be taken as non free
 - fixed #11708: Activity DeleteExpiredSessions is too slow
 - fixed #11621: Documentation Error: Methods that accept URLs should indicate whether or not to include Gateway
 - fixed #11457: Carousel broken
 - fixed #11455: Wrong use of Extras macro?
 - fixed #11715: "Empty" user profile fields: not in userProfileData / cannot delete
 - fixed #11718: Matrix does not URI encode search parameters