Completed LTI 1.1 Grade Submit Code

Changes can be found in /src/main/webapp/proc_create.jsp and
/src/main/webapp/view.jsp.

You must create the grade book column with
blackboard.platform.gradebook2.GradableItem in order to associate the
column with the content ID. You can then add the
.addGradingInformation(…) method to your BasicLTILauncher code.