21 more tool manuals added

21 more tool manuals and parts lists were added recently:

Black & Decker:
   - 1 drill manual

Bosch:
   - 1 sander manual

Craftsman:
   - 1 drill press manual

DeWalt:
   - 1 grinder parts list
   - 1 joiner parts list
   - 1 saw manual, 1 saw parts list

Ryobi:
   - 1 drill manual
   - 1 saw manual, 3 saw parts lists

Wen:
   - 1 drill manual
   - 1 drill press manual
   - 1 driver manual
   - 3 grinder manuals
   - 1 rotary tool manual
   - 2 sander manuals