Moved Durandal to full AMD.

There are now no longer any global variable requirements other than
"define." Durandal now correctly "requires" jQuery and Knockout, rather
than relying on global variables. All platforms have been updated with
the appropriate path and shim configs to make this work. Should an
individual need to make jQuery of Knockout global, then can easily do so
by adding standard script tags back in and manually calling "define" for
jquery and knockout to make Durandal aware of them.