Accept unofficial submissions to ae by default

Active elements with max submissions are put in a separate category
"active elements with max submissions" that doesn't accept unofficial
submisions by default. Closes #165

directives/ae_output.py

@@ -109,6 +109,8 @@ def run(self):
             'category': 'active elements',
             'max_submissions': self.options.get('submissions', data.get('max_submissions', env.config.ae_default_submissions)),
         })
+        data["category"] = "active elements" if data["max_submissions"] == 0 else "active elements with max submissions"
+
         data.setdefault('status', self.options.get('status', 'unlisted'))
 
         self.apply_override(data, category)

toc_config.py

@@ -416,6 +416,10 @@ def parse_chapter(docname, doc, parent, module_meta):
         if key in categories:
             categories[key]['status'] = 'nototal'
 
+    if "active elements" in categories:
+        categories["active elements"].setdefault("accept_unofficial_submits", True)
+
+    # Set unprotected paths
     unprotected_paths = course_meta.get('unprotected-paths', app.config.unprotected_paths)
     if isinstance(unprotected_paths, str):
         unprotected_paths = shlex.split(unprotected_paths)