Fix autocomplete in registration views.

django-autocomplete-light v3.x doesn't include anymore the $('').yourlabsAutocomplete() function, leading to issues in cof registration and kfet account creation views.

Adding jquery-autocomplete-light fixes these issues.

See:

• (dal) https://github.com/yourlabs/django-autocomplete-light
• (jal) https://github.com/yourlabs/jquery-autocomplete-light