Fingertip razors.

Passive bionic that adds a small amount of slashing damage to unarmed
attacks.
Protective eye lenses.
updated fire truck
Fixing incorrect body part checks.
Merge eye lenses and fingertip razors.
Merge fire truck tweaks.
Merge merges into master.

Conflicts:
	data/json/bionics.json
Merge branch 'master' of https://github.com/CleverRaven/Cataclysm-DDA