[4pt] - Enable Reserve - Student C

[williamscch]

To reserve an appointment, the user has to select a date and city (username and selected item are autofilled).
Use the design based on the "Book a vespa test-ride" and add all necessary inputs.
The user can also access the "Reserve" page from the navigation panel. In that case only username is autofilled.

When the user clicks the "My reservations" link in the navigation panel they can see a list of their reservations (with information about item name, date and city).