Fixes for https://edx.lighthouseapp.com/projects/102637/tickets/144 (progress tab not updating).

common/lib/xmodule/xmodule/capa_module.py

@@ -229,6 +229,7 @@ class CapaModule(XModule):
             'element_id': self.location.html_id(),
             'id': self.id,
             'ajax_url': self.system.ajax_url,
+            'progress': Progress.to_js_status_str(self.get_progress())
         })
 
     def get_problem_html(self, encapsulate=True):

lms/djangoapps/courseware/views.py

@@ -233,10 +233,13 @@ def index(request, course_id, chapter=None, section=None,
                 # Specifically asked-for section doesn't exist
                 raise Http404
 
-            # Load all descendents of the section, because we're going to display it's
+            # Load all descendants of the section, because we're going to display it's
             # html, which in general will need all of its children
+            section_module_cache = StudentModuleCache.cache_for_descriptor_descendents(
+                course.id, request.user, section_descriptor, depth=None)
+
             section_module = get_module(request.user, request, section_descriptor.location,
-                                        student_module_cache, course.id, position=position, depth=None)
+                section_module_cache, course.id, position=position, depth=None)
             if section_module is None:
                 # User may be trying to be clever and access something
                 # they don't have access to.

lms/templates/problem_ajax.html

-<section id="problem_${element_id}" class="problems-wrapper" data-problem-id="${id}" data-url="${ajax_url}"></section>
+<section id="problem_${element_id}" class="problems-wrapper" data-problem-id="${id}" data-url="${ajax_url}" progress="${progress}"></section>