A bunch of module bugfixes

modpol_core/modules/join_org.lua

@@ -7,19 +7,19 @@ join_org.setup = {
    desc = "If consent process is passed, initiator joins this org."
 }
 
-function join_org.initiate(initiator, org, result) 
+function join_org.initiate(result) 
     modpol.interactions.binary_poll_user(
         initiator, 
         "Would you like to join " .. org.name, 
         function (resp) 
             if resp == "Yes" then
-                org:add_member(initiator)
+                self.org:add_member(self.initiator)
             end
         end
     )
 
-    for i, member in ipairs(org.members) do
-        org:add_pending_action(
+    for i, member in ipairs(self.org.members) do
+        self.org:add_pending_action(
             member,
             function () 
                 modpol.interactions.binary_poll_user(