* Laser pointers
Adds laser pointers, ported from tg/oldaurora (but heavily modified). They can be found in the loadout, as well as made by science. Science can also upgrade them, which makes them occasionally useful for blinding people, too.
The bugfixes which make several of the features work properly will come in a separate commit.
* Three fixes
Cats now have resting sprites for all 4 directions, instead of just east. This was needed to make cats look like they're pouncing on the laser dot.
Cameras can now be EMPed more than once, and EMPs actually are able to disable them now. This was needed for the shining lasers into cameras feature.
Flash_eyes() now actually displays a flashing animation on your screen when you get flashed (except for silicons, who for some reason are excluded from this unless EMPed). This was needed for laser pointers to have a temporary "blinding" effect when shone into someone's eyes.
(removes errant debug message too, whoops)
* Nerf
Reduced chances of laser pointers doing anything useful on silicons.
Also, fixes a duplicated proc, oops.
* Requested changes
Minor changes as requested - 'cell' to 'diode', view() to viewers(), range() to viewers().
Stops buckled or dead cats from reacting to laser pointers. Zombie cats are fun, but no.
Also, does another small nerf to the effects on silicons.
