Pages moved to templates, message boxes, editing working for everything made up to now.

- Used datepicker.
- Made a filter for boolean.
- Attivita working in read/edit/new/delete mode.
- Struttura working in read/edit/new/delete mode.
- Dipendente working in read/edit/new/delete mode.
- Connection of Attivita to Struttura almost complete.
- TODO:
	- Connection of Assunzione to Dipendente and to Attivita.
	- List of Assunzione.
	- New Assunzione.
	- Edit Assunzione.
	- Delete Assunzione (firing).