15 more tool manuals added

15 more tool manuals and parts lists have been added recently:

Dimas:
   - 1 power unit manual, 1 power unit parts list
   - 2 saw manuals, 2 saw parts lists

Freeman:
   - 2 nailer manuals, 2 nailer parts lists

Husqvarna:
   - 1 saw parts list

Stihl:
   - 2 saw manuals, 1 saw parts list, 1 saw technical information guide