Move data/global/settings.json into the database. Improved some error plumbing along the way.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3775 ed5197a5-7fde-0310-b194-c3ffbd925b24

core/app.js

@@ -60,6 +60,7 @@ function socket(request, response, client) {
 					blobId = await new Database(user).get('path:' + path);
 					if (!blobId) {
 						response.send(JSON.stringify({action: "error", error: message.path + ' not found'}), 0x1);
+						return;
 					}
 				}
 				response.send(JSON.stringify({action: "session", credentials: credentials}), 0x1);