The Date Widgets plugin offers various widgets that are used to enter a Date in a form.
At this time we support a Line Edit which opens a dropdown that looks like a calendar.
We also offer a date one can define using dropdowns instead of a line edit. This way you can easily control what the end user can enter in terms of years. This feature will be entended to allow users to type in whatever numbers they want (i.e. we need the dropdown that allows typing data in directly.)