[repository] fix edited_attributes management in multiple SET queries entity.edited_attributes was messed up with previous edited entities. The UpdateStep now gives a new fresh edited_attributes set to repository.glob_update_entity() so that each entity can modify it during its "transaction".

This directory is where you should put your lax components.

For your application to actually use a component, you also 
have to modify the ``INCLUDED_COMPONENTS`` variable in 
the ``custom.py`` module.