Add/enable codemirror's javascript-lint using jshint, and fix a few things.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4248 ed5197a5-7fde-0310-b194-c3ffbd925b24

apps/apps/app.js

@@ -70,7 +70,7 @@ async function main() {
 	populate_apps('apps', '${core.user.credentials?.session?.name}', ${JSON.stringify(apps)});
 	populate_apps('core_apps', 'core', ${JSON.stringify(core_apps)});
 </script>
-</html>`
+</html>`;
 	app.setDocument(doc);
 }