Merge pull request #813 from edx/bugfix/ichuang/course-tabs-None

bugfix: Course static_tabs importing with display_name = "None"

cms/djangoapps/contentstore/tests/test_import_nostatic.py

@@ -127,3 +127,9 @@ class ContentStoreImportNoStaticTest(ModuleStoreTestCase):
 
         handouts = module_store.get_item(Location(['i4x', 'edX', 'toy', 'html', 'toyhtml', None]))
         self.assertIn('/static/', handouts.data)
+
+    def test_tab_name_imports_correctly(self):
+        module_store, content_store, course, course_location = self.load_test_import_course()
+        print "course tabs = {0}".format(course.tabs)
+        self.assertEqual(course.tabs[2]['name'],'Syllabus')
+        

common/lib/xmodule/xmodule/modulestore/mongo/base.py

@@ -794,7 +794,7 @@ class MongoModuleStore(ModuleStoreBase):
             existing_tabs = course.tabs or []
             for tab in existing_tabs:
                 if tab.get('url_slug') == loc.name:
-                    tab['name'] = metadata.get('display_name')
+                    tab['name'] = tab.get('name', metadata.get('display_name'))
                     break
             course.tabs = existing_tabs
             # Save the updates to the course to the MongoKeyValueStore

common/test/data/test_import_course/tabs/resources.html

+<div>resources!</div>

common/test/data/test_import_course/tabs/syllabus.html

+<h1>This is a syllabus</h1>