most of work for 2.4 done

finished functionality and help,  documentation (readme) not done
- added mention
- finished debug
- improved poll info
- finished cmd
- finished to_command

essentials/multi_server.py

@@ -148,7 +148,7 @@ async def ask_for_channel(ctx, bot, server, message):
         def check(m):
             return message.author.id == m.author.id
         try:
-            reply = await bot.wait_for('message', timeout=60)
+            reply = await bot.wait_for('message', timeout=60, check=check)
         except asyncio.TimeoutError:
             pass
         else:
@@ -161,4 +161,4 @@ async def ask_for_channel(ctx, bot, server, message):
                     nr = int(reply.content)
                     if 0 < nr <= channel_list.__len__():
                         valid_reply = True
-    return channel_list[nr - 1]
+    return channel_list[nr - 1]