Cart registration tweaks:
When we load a /cart/X/ URL any previous login sessions should be cleared. This allows the user to register multiple times.
Remove the top-right account/profile navigation (for this page only). The user doesn't need this on registration.
To test item 1 we'll need the functionality removed in item 3. Please add a
DEBUG_REGISTER_STATUSflag to the config. If
TRUEthen the profile navigation should be displayed.
...merged manually and recreated merge request.