Moved org finder to the core

Allowed viewing the most recent account logs by using !account log recent
Allowed removing of chatbots
Moved the so far hardcoded org prefixing into the DB, which allows dynamically changing them.
Fix for orgrosters; org leaves are being detected now.

core/igncore.py

@@ -43,7 +43,7 @@ class IgnCore:
         self.last_timer_event = 0
         self.start_time = int(time.time())
         self.major_version = "IGNCore v2.8"
-        self.minor_version = "2"
+        self.minor_version = "3"
         self.incoming_queue = FifoQueue()
         self.mass_message_queue = None
         self.conns = DictObject()