ByteSize should implement IComparable

[Vloodz]

When adding ByteSize objects to a DataTable sorting doesn't work. This can be fixed by implenting IComparable, which can be done in just a few lines of code.

See the following link for more info:
http://stackoverflow.com/questions/24087735/make-a-datatable-sort-by-an-objects-compareto-method

[MehdiK]

I will be honest with you: I don't promise to add this in, as supporting DataTable is not a goal of this framework. That said I am interested to see what's involved. So send a PR and we will check it out. Thanks.

[MehdiK]

@Vloodz the support is being added. @mexx to the rescue as usual!