fix crash, improve !cmd help and errors, add database locks for high traffic servers, cache prefixes, add production/development setting

essentials/multi_server.py

@@ -11,7 +11,7 @@ async def get_pre(bot, message):
     if str(message.channel.type) == 'private':
         shared_server_list = await get_servers(bot, message)
         if shared_server_list.__len__() == 0:
-            return 'pm!!'
+            return 'pm!'
         elif shared_server_list.__len__() == 1:
             return await get_server_pre(bot, shared_server_list[0])
         else:
@@ -24,12 +24,13 @@ async def get_pre(bot, message):
 async def get_server_pre(bot, server):
     '''Gets the prefix for a server.'''
     try:
-        result = await bot.db.config.find_one({'_id': str(server.id)})
+        #result = await bot.db.config.find_one({'_id': str(server.id)})
+        result = bot.pre[str(server.id)]
     except AttributeError:
         return 'pm!'
-    if not result or not result.get('prefix'):
-        return 'pm!!'
-    return result.get('prefix')
+    if not result: #or not result.get('prefix'):
+        return 'pm!'
+    return result #result.get('prefix')
 
 
 async def get_servers(bot, message, short=None):

essentials/settings.py

@@ -22,6 +22,7 @@ class Settings:
         self.dbl_token = SECRETS.dbl_token
         self.mongo_db = SECRETS.mongo_db
         self.bot_token = SECRETS.bot_token
+        self.mode = SECRETS.mode
 
 
 SETTINGS = Settings()