Increased contacts limit to 200, from 20

So that if you have more than 20 friends (or followed > 20 people), you will see all of them (up to 200, anyway...) in the "Contacts" portion of the `/chats` route.

src/controllers/accounts.js

@@ -498,7 +498,7 @@ accountsController.getChats = function(req, res, next) {
 	}
 
 	async.parallel({
-		contacts: async.apply(user.getFollowing, req.user.uid, 0, 19),
+		contacts: async.apply(user.getFollowing, req.user.uid, 0, 199),
 		recentChats: async.apply(messaging.getRecentChats, req.user.uid, 0, 19)
 	}, function(err, results) {
 		if (err) {