made user managment case insensitive

Added CharactersCountObserver.py which outputs the written characters on command

FaustBot/Modules/CharactersCountObserver.py

@@ -0,0 +1,22 @@
+import datetime
+
+from FaustBot.Communication.Connection import Connection
+from FaustBot.Model.UserProvider import UserProvider
+from FaustBot.Modules.PrivMsgObserverPrototype import PrivMsgObserverPrototype
+
+
+class CharactersCountObserver(PrivMsgObserverPrototype):
+    @staticmethod
+    def cmd():
+        return [".characters"]
+
+    @staticmethod
+    def help():
+        return ".characters - um abzufragen wieviel du bisher geschrieben hast."
+
+    def update_on_priv_msg(self, data, connection: Connection):
+        if data['message'].find('.characters') == -1:
+            return
+        user_provider = UserProvider()
+        output = data['nick']+": du hast "+str(user_provider.get_characters(data['nick']))+ " Zeichen geschrieben."
+        connection.send_back(output, data)