31 more tool manuals added

31 more tool manuals and parts lists have been added recently:

Bostitch:
   - 1 nailer manual, 1 nailer parts list

Central Machinery:
   - 1 drill press manual
   - 3 grinder manuals
   - 1 sander manual

Central Pneumatic:
   - 1 impact wrench manual

Chicago Electric:
   - 2 grinder manuals

Delta:
   - 1 grinder manual

Foley:
   - 1 grinder manual

Grizzly Industrial:
   - 1 grinder manual

Jet:
   - 1 drill press manual

Kawasaki:
   - 1 heat gun manual

Makita:
   - 1 sander manual, 2 sander parts lists

Porter-Cable:
   - 1 grinder manual
   - 1 router manual

Ridgid:
   - 1 sander manual
   - 2 saw manuals, 1 saw parts list

Ryobi:
   - 1 grinder manual, 1 grinder parts list

Wen:
   - 2 drill press manuals
   - 1 grinder manual
   - 1 rotary tool manual
   - 1 saw manual