Changing sync method to daily from hourly

Instead of using the broken hourly partial-sync, we'll just do an
exhaustive initial sync daily at midnight.

It sucks to do this against npm, but their API broke and I've not
received a response in a week.

re: npm/npm-registry-couchapp#242

index.js

@@ -22,7 +22,9 @@ require('./lib/routes')(app, controllers);
 
 winston.info('NodeBB Package Manager - Initializing');
 
-new cronJob('0 * * * *', packages.registry.sync, null, true);
+new cronJob('0 0 * * *', function() {
+	packages.registry.sync(true);	// Sync daily, instead
+}, null, true);
 
 app.listen(process.env.PORT || 3000);
 winston.info('NodeBB Package Manager - Ready');