[cleanup] simplifications thanks to default config
[fix/evol] ensure a shadow/object/aspect is not cast(/post-cast) multiple times, and btw correct the raise_error() method
[fix] check for dependency aspects for an aspect was missing
[fix] check for needed aspect for an object was subject to crash
[evol/fix] fixed creation hooks call, hooks->plugins with hooks and simplified hooks, added plugin parameters in config and updated aspect/fs
[fix] check better if a field value has changed or not
[evol] apply password hash if requested
[evol] don't try to find raw item object if it is already known, be lazy
[fix] try harder to find item name
[cleanup] internal rework #5
[cleanup] internal rework #4
[cleanup] internal rework #3
[cleanup] internal rework #2
[cleanup] internal rework #1
[cleanup] improve elements classes generation (with a few more checks)