Make the issues app use the global id picker, fix jsonb issues, and fix the global id picker.

apps/issues/app.js

@@ -85,6 +85,9 @@ tfrpc.register(async function store_message(message) {
 tfrpc.register(function apps() {
 	return core.apps();
 });
+tfrpc.register(function getActiveIdentity() {
+	return ssb.getActiveIdentity();
+});
 tfrpc.register(async function try_decrypt(id, content) {
 	return await ssb.privateMessageDecrypt(id, content);
 });