Create form validation

[richard-jones]

Add form validation, such as:

• year no more recent than the current year

@mjb295 - can you expand on your validation requirements for this form, and then re-assign to @Nimphal

[mjb295]

For now, just limit it so that users cannot add a year "after" current year.

[nimphal]

Form now raises error if Year Published is in the future.