Display rehaul

*BAD is now DATA
*DATA displays guessed instruction, and up to 4 words if they are also bad
*If a word can be guessed, it is started on a new DATA line.
*SUBI has been fixed
**CMPI should be checked to follow changes
*All unimplemented OP-codes have been changed to show DATA
**No line will be left blank now :P
*[ENTER] must now be pressed to go to the next page
* > (right on numpad, or 6) can also be pressed
* v (down on numpad, or 2) can be pressed to go to the next instruction
** Placeholders for < and ^ when implemented
* Probably other stuff.