[fix/evol] correct a bug in the item creation when handling the parent parameter, allow specifying a default parent per object, and provides a new find_by_full_handle() handy method
[evol] limit parent location/type for item creation (not yet properly integrated)
[fix] silly mistakes in the object schema
[cleanup] reorganized config
[evol/fix] fixed creation hooks call, hooks->plugins with hooks and simplified hooks, added plugin parameters in config and updated aspect/fs
[evol] improve config #14 (validate global and shadow config, and removed shadowwalker's stuff from the general classes)
[evol] improve config #11 (improved object definition check #2)
[evol] improve config #10 (improved object definition check)
[evol] improve config #9 (preliminary work to check object definition against schema)