bonus two for #3481 - chats/username route

public/language/en_GB/pages.json

@@ -14,7 +14,6 @@
 	"notifications": "Notifications",
 	"tags": "Tags",
 	"tag": "Topics tagged under \"%1\"",
-	"chats": "Chats",
 	"register": "Register an account",
 	"login": "Login to your account",
 	"reset": "Reset your account password",
@@ -23,6 +22,9 @@
 	"groups": "Groups",
 	"group": "%1 group",
 
+	"chats": "Chats",
+	"chat": "Chatting with %1",
+
 	"user.edit": "Editing \"%1\"",
 	"user.following": "People %1 Follows",
 	"user.followers": "People who Follow %1",

src/meta/title.js

@@ -15,7 +15,8 @@ module.exports = function(Meta) {
 		isTopic: /^topic\/\d+\/?/,
 		isTag: /^tags\/[\s\S]+\/?/,
 		isUserPage: /^user\/[^\/]+(\/[\w]+)?/,
-		isGroup: /^groups\/[\s\S]+\/?/
+		isGroup: /^groups\/[\s\S]+\/?/,
+		isChat: /^chats\/[\s\S]+\/?/
 	};
 
 	Meta.title.build = function (urlFragment, language, callback) {
@@ -100,6 +101,18 @@ module.exports = function(Meta) {
 					onParsed(null, translated);
 				});
 			});
+		} else if (tests.isChat.test(urlFragment)) {
+			var userslug = urlFragment.match(/chats\/([\s\S]+)/)[1];
+
+			user.getUsernameByUserslug(userslug, function(err, username) {
+				if (err) {
+					return onParsed(err);
+				}
+
+				translator.translate('[[pages:chat, ' + username + ']]', language, function(translated) {
+					onParsed(null, translated);
+				});
+			});
 		} else if (tests.isUserPage.test(urlFragment)) {
 			var	matches = urlFragment.match(/user\/([^\/]+)\/?([\w]+)?/),
 				userslug = matches[1],