Commodore 64 Tidying Up

This needs to work before anything else:

1. Power on C64 and FujiNet
2. LOAD"CONFIG.PRG",8
3. RUN
4. SELECT APPS.IRATA.ONLINE
5. COMMODORE
6. PRINTSHOP.D64
7. MOUNT INTO SLOT 1
8. ESC
9. ESC AGAIN
10. LOAD"*",8,1
11. RUN
12. PRINT SHOP LOADS.

CONFIG

• Switch character set to lowercase.
• Fix hang when mounting all at exit
• prettying up
• Build for plus4
• make screen handler for vic20, and build for vic20