Now using the course name as the default wiki namespace.

common/lib/xmodule/xmodule/course_module.py

@@ -30,6 +30,10 @@ class CourseDescriptor(SequenceDescriptor):
     def instructors(self):
         return self.get_about_section("instructors").split("\n")
         
+    @property
+    def wiki_namespace(self):
+        return self.location.course
+
     def get_about_section(self, section_key):
         """
         This returns the snippet of html to be rendered on the course about page, given the key for the section.