15 more tool manuals

15 more tool manuals and parts lists were added recently:

Chicago Electric:
   - 1 grinder manual

Ozito:
   - 2 grinder manuals
   - 3 nail gun manuals

Ryobi:
   - 3 drill manuals, 3 drill parts lists
   - 1 sander manual, 1 sander parts list

Wen:
   - 1 sander manual