Roller derby time!

Adds classic leather quad skates - slower but more stable than inline
skates.
Adds Roller Derby Player profession.
Fixes tool quality for utility belt re: wood saw.

Saw had 2, belt had 1.
Thanks goes to @Valkjosandi18 for pointing this out in irc.
Speed tweak.
Merge pull request #8642 from Rivet-the-Zombie/toolbelt-quality-fix

Fixes tool quality for utility belt re: wood saw.
Gives robocop some pants.

Since it becomes really apparent when you start this profession in the
winter, you're not actually made of metal; you're naked and freezing.
Merge pull request #8644 from Rivet-the-Zombie/robopants

Gives robocop some pants.
Fixes toolbox wood saw quality.

Same as the utility belt fix, saw has 2, box has 1.
Merge pull request #8645 from Rivet-the-Zombie/toolbox-fix

Fixes toolbox wood saw quality.
Derp.
Merge pull request #8643 from Rivet-the-Zombie/roller-derby!

Roller derby time!