Fixes #845: NPCs hold torches during the day

Moved 'equipping torches at night and unequipping at day' code from Character
to Actors class.

Removed unneeded showLights method (introduced in previous commits)
from animation/npcanimation classes.

Since this commit autoEquip() method doesn't automatically equip lights.

Signed-off-by: Lukasz Gromanowski <lgromanowski@gmail.com>