fix pclasse assign now if class is same, bug on join server add on_unassigned for all class
- MFF-specific mods folder
** Code convention
All MFF mods must be in the mff
global table, and thus shall depend on the mff_core mod first defining it.
The reason for this is to allow introspection using mff_introspect to track bugs at runtime, and more generally to define a code namespace.