Refactoring stub lti.
Fix doGet.
Fix doPost.
Fix doublequoting.
Add lti to command-line utility.
Use address and port from server instance in stub.
Fix doublequoting in tests.
Use callback url sent from tool consumer always.
Fix stub tests.
Add site name to acceptance test settings.
Use debug flag from system.
Rename methods to be private.
Style improvement.
Make some code more readable.
More style improvements.
Fix test.