17 more tool manuals added

17 more tool manuals have been added to the site recently:

Hitachi:
   - 2 driver parts lists
   - 1 hammer manual, 1 hammer parts list
   - 1 impact wrench manual, 5 impact wrench parts lists, 1 impact wrench service manual

Ridgid:
   - 3 driver manuals, 1 driver parts list
   - 1 saw manual
   - 1 wrench parts list