*Reorganized code so that further expansion is possible in a very organized manner.

*modpol.add_member() -- added a check if the member is already a member of that organized

*storage -- fixed bug by moving storageref to top of file

*added on_joinplayer to add players to instance

*moved minetest specific code in init.lua to modpol_minetest, organized in folders.
All overrides in one folder, all chatcommands in another, the on_joinplayer in modpol_minetest/orgs/instance.lua

modpol_minetest/chatcommands/chatcommands.lua

@@ -0,0 +1,78 @@
+-- ===================================================================
+-- Minetest commands
+-- ===================================================================
+
+local chat_table                -- MT chat command definitions table
+local regchat                   -- Chat-command registration function
+
+regchat = minetest.register_chatcommand
+
+-- ===================================================================
+-- /addorg  /add_org
+-- This code defines a chat command which creates a new
+-- "org". Presently, the command makes the user the sole member of the
+-- "org".
+
+chat_table = {
+   privs        = {} ,
+   func         = function (user, param)
+      local result = modpol.add_org (param, { user })
+      return true, result
+   end        
+}
+regchat ("addorg"  , chat_table)
+regchat ("add_org" , chat_table)
+
+-- ===================================================================
+-- /listorg  /listorgs  /list_org  /list_orgs
+-- In Minetest mode,  this code defines a chat command which lists the
+-- existing "orgs".
+-- The list shows one "org" per line in the following format:
+-- org_name (member, member, ...)
+
+chat_table = {
+    privs = {} ,
+    func  = function (user, param)
+        return true, "Orgs:\n" .. modpol.list_orgs()
+    end
+}
+
+regchat ("listorg"   , chat_table)
+regchat ("listorgs"  , chat_table)
+regchat ("list_org"  , chat_table)
+regchat ("list_orgs" , chat_table)
+
+-- ===================================================================
+-- /listplayers
+minetest.register_chatcommand(
+   "listplayers", {
+      privs = {},
+      func = function(user)
+         local result = table.concat(modpol.list_users(),", ")
+         return true, "All players: " .. result
+      end,
+})
+
+-- ===================================================================
+-- /joinorg
+minetest.register_chatcommand(
+   "joinorg", {
+      privs = {},
+      func = function(user, param)
+         local result = modpol.add_member(param, user)
+         return true, result
+      end,
+})
+
+
+-- ===================================================================
+-- /pollself [question]
+-- asks the user a question specified in param
+minetest.register_chatcommand(
+   "pollself", {
+      privs = {},
+      func = function(user, param)
+         modpol.binary_poll_user(user, param)
+         return true, result
+      end,
+})