Add grade functionality for LTI (BLD-384)
Add lookup table to students module.
Update test lti server and add script for manual run
Investigations.
Add processing of XML request to LTI.
Add course_id to lookup table.
Fix post dict and add click on submit button.
Updates on lookup table and  functions.
Add custom handler.
Add oauth sign.
Updated mock_lti_server and removed odd unicode decalarion.
Fix oauth body hash.