19 more tool manuals added

19 more tool manuals and parts lists were added recently:

Air-Plus:
   - 1 nailer manual

Clarke:
   - 1 saw manual

Energer:
   - 1 saw manual

Fluke:
   - 1 clamp manual
   - 4 clamp meter manuals
   - 5 multimeter manuals
   - 2 thermal imager manuals, 1 thermal imager manual supplement

HiKOKI / Hitachi:
   - 2 drill manuals, 1 drill parts list