19 tool manuals added

19 more tool manuals have been added over the past few days:

Hitachi:
   - 1 drill manual, 2 drill parts lists
   - 1 grinder manual, 2 grinder parts lists
   - 1 hammer manual, 1 hammer parts list
   - 1 sander parts list
   - 1 saw manual, 1 saw parts list

Panasonic:
   - 1 drill parts list

Ridgid:
   - 2 planer manuals, 1 planer parts list
   - 1 router manual, 1 router parts list
   - 1 saw manual, 1 saw parts list