assignment-4-task-2: copied solution from assignment-2 as basis
assignment-4-task-2: simplified form as described in the task

only name and email (dropped lastname and phone)
assignment-4-task-2: added cinema and selected seats to reservation form
assignment-4-task-2: insert reservations into MySQL
assignment-4-task-2: .php extension for reservation.html
assignment-4-task-2: get reservation entries from db
assignment-4-task-2: use existing reservations from db
assignment-4-task-2: fixed selection of IMAX
assignment-4-task-2: jump to next section instead of top after selection
assignment-4-task-2: small layout improvements
assignment-4-task-2: fixed clickOnReservation in Chrome