Parameters are now escaped for scormcloud calls.

The allows redirect_urls for launches to include anchors, i.e.
http://example.com/index.php#whatever.  It's important to note that the
call's signature is NOT based on the escaped values.  Doing so will
cause the SCORMCloud API to response that the signature is bad.

http://trac.aura-software.com/MedizinMedien/ticket/200