Relaybot is now a subplugin of the IRC Parser

Fixes issue 4001

Change-Id: Ic93e65f19337913aea5133cce6a845c5ab8b974d
Reviewed-on: http://gerrit.dmdirc.com/1128
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Gregory Holmes <greg@dmdirc.com>

src/com/dmdirc/addons/relaybot/plugin.config

   version
   defaults
   updates
+  requires
 
 metadata:
   author=Shane <shane@dmdirc.com>
 updates:
   id=50
 
+requires:
+  parent=parser_irc
+
 defaults:
   colourFullName=true
   joinOnDiscover=false