Some barcoded personal numbers is using 2-digit years instead of 4

[Nicklas Nordborg]

If the length of the personal number is 10 and the rest of the number is valid according to the swedish rules we could simply add the missing digits. We can assume that the patient is less than 100 years old so there should not be any ambiguity about the century.

This should be implemented in the blood registration form and in the personal information registration form.

[Nicklas Nordborg]

(In [1531]) Fixes #357: Some barcoded personal numbers is using 2-digit years instead of 4

The blood registration and personal information registration now support 2-digit years. They will automatically convert to a 4-digit year assuming the age is between 1 and 100.