31 more tool manuals added

31 more tool manuals and parts lists have been added over the past couple of days:

DeWalt:
   - 1 drill manual, 1 drill parts list
   - 2 grinder parts lists
   - 2 measurer quick start guides
   - 5 saw manuals, 1 saw parts list
   - 2 screwdriver manuals, 3 screwdriver parts lists

Ryobi:
   - 3 heat gun manuals, 1 heat gun parts list
   - 5 saw manuals, 5 saw parts lists