AddGroupToCourse() catches parameter errors

Ensure Moodle API returns correctly formed JSON by using moodlewssett…

…ingraw

Add api.GetForumsDiscussions()

Pass on the forum "assessed" flag

Fix SetAssessmentExtensionDate() response text checking

Fix SetAssessmentExtensionDate() response text checking

Fix test errors

Add SetAssessmentExtensionDate()

Don't return array pointers, thats just silly

Add GetForumsWithCourseId()

Return assignment created and updated time