13 more chain saw manuals added

13 more chain saw operator manuals, parts lists, and service manuals have been added, for the following brands:

- Homelite: 1 chain saw manual
- Husqvarna: 1 chain saw parts list
- Remington: 2 chain saw manuals
- Stihl: 4 chain saw manuals, 1 chain saw service manual
- Talon: 2 chain saw manuals, 2 chain saw parts lists