#5 distinction between original number and new inputs

[ganggang]

there should be some distinction between original number and new inputs, including both in record and display, Since user handle them differently.
And this may require some change in sdk file, such as a leading 0 in original number.

[Xosé Otero]

I have a rewritten Board class that uses xml to represent: given numbers, user numbers and probable numbers.

This is part of the rewrite that I want to finish in the next days.