Bug: Bank and Direct page registers are ignored when replacing 8-bit addresses with labels

[ChristopheF]

If I define a label named "TEST" for address $000016 then the instruction:
STZ.B $16
is replaced with
STZ.B TEST
in both the Diz user interface and the generated asm code, no matter which values are in the B and D columns!

But this is only appropriate if both the 'B' and 'D' columns are set to 0.
If these columns have other values, the IA column contains the true address of the operand, which should not be replaced with the label for the address $000016, but with the label for the address in the IA column.
This is related to #34