docs(sample): Home page enhancements

Add logo
Add version on Download button
fix(sample): prevent direct URL access to a day disabled in the datepicker

Redirection from `booking.day` to `booking` if the date has no reservation.

Closes: #17
fix(sample): make the CRU(D) about rooms working

"New" and "Edit" buttons are working now. Modifications are effective until the next refresh.