History, Reply to messages and RAI

Contains

• History loading various fixes
• Reply button on messages (mucs and chats)
• Replaced the original RAI implementation with the converse one

Closes #262 (closed)

src/plugins/converse-rai.js

@@ -164,7 +164,7 @@ converse.plugins.add('converse-rai', {
 
     // TODO: On loading subscribe to all the ChatViews in navigation (into another plugin)
     api.listen.on('connected', () => {
-      _converse.connection.addHandler(mucActivityHandler, null, 'message', 'groupchat');
+      _converse.connection.addHandler(mucActivityHandler, null, 'message');
     });
 
     // TODO: Remove