Implemented client_serverlist module! Close #200

* Will store servers that are not already in the list when logging in
* Can add servers manually if required too
* Fixed a bug in table.size

modules/corelib/table.lua

@@ -146,7 +146,7 @@ end
 
 function table.size(t)
   local size = 0
-  for i, n in pairs(table) do
+  for i, n in pairs(t) do
     size = size + 1
   end