Allow get and generate order for specific date

The follow URLs are valid now:
* http://localhost:59950/MyMenu/Order
* http://localhost:59950/MyMenu/Order?dateoffset=1
* http://localhost:59950/MyMenu/Order?dateoffset=-1
* http://localhost:59950/MyMenu/Order?date=2013-06-01
* http://localhost:59950/MyMenu/Order?date=2013-06-01&dateoffset=-1
* http://localhost:59950/MyMenu/Order?date=2013-06-01&dateoffset=1
Fix TypeScript errors
Ugly patch to redirect to order when the user is not admitted for menu
Allow to change see different day orders from UI
Merge pull request #293 from andresmoschini/preview-menu

Preview menu