Moves the functionality from views._get_jwt_dict_from_access_token_dict
to a new method jwt.create_jwt_token_dict, which create a JWT version
of the passed token_dict. Also updates create_jwt_from_token to wrap
this call and return the "access_token" from the dict.
This will hopefully make it less likely that the token
dict attributes could get out of sync with the claims
inside the JWT.
432cde31a5