updates on index.html, create script and cronogram

added new field to create scripts;
cronograma now reflects more of how to deal with data in DB;
index has now the following pages interfaces prepared:
- program
- program_detail
- program_day
-program_day_detail
- presentation_detail
- event_detail

missing is the javascript to control data update on pages which are in
need of it.

We are almost there I can say!