Stuns, Stamina, and Slippping changes

## It's time for controversy
If you're unfamiliar with the stamina system (Most people are actually unaware it even exists), here's how stamina works:

-Stamina damage heals naturally over time. 
-If your actual damage + stamina damage is greater than 100, you are weaken(5)'d. 
-Stamina damage, like normal damage, slows you down, so the easier you are to hit the more stamina damage you have on you.

>**1. Removes instant weakening/stunning from many, many projectiles in the game. Instead, they now do large amounts of stamina damage to compensate.** This means no more one-shot ranged stuns, for the most part, for security AND antagonists.
>2. **Non ranged stuns are untouched**
>3. Water slipping has been changed; Slipping on a water tile that someone has sprayed with or splashed with water will cause you to slip and drop your carried items, but you will NOT be stunned. Slipping on a water tile from a standard mop will have the original stunning, for janitors to lord over the station with. The advanced mop uses the former, so another "benefit" to upgrading your mop. Lube still works as-is.
>4. Unarmed attacks deal stamina damage instead of having a random chance to weaken, and armor protects against this.
>5. Brute force weapons dealing damage to the chest deal **max(Forcex0.75, 10)** stamina damage instead of RNG knockdown. Armor does not protect against the stamina damage, but still works regularly for the brute damage.
>6. The disabler is now the standard security sidearm.

This one's gonna get heated. What this does is turn combat in SS13 into a little more complicated than "Shoot with taser, cuff", and prolongs firefights. **Keep in mind that prolonging firefights tends to aid the person that has lower amounts of people on their side.** Do we want this to happen? I'm interested in seeing it, but it's impossible to really see what the effect this will have on the game. If you've played lasertag, which uses stamina damage, that is slightly similar to what this would be like.