22 more tool manuals added

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

Bostitch:
   - 3 nailer manuals

Grizzly Industrial:
   - 2 router manuals
   - 3 router table manuals
   - 1 router table extension manual

Hitachi:
   - 3 hammer manuals, 3 hammer parts lists
   - 2 impact wrench manuals, 3 impact wrench parts lists
   - 1 saw manual, 1 saw parts list
   - 1 tool set parts list