Adds Paramedic job as outlined on the forums. Reduces MD access to EVA,
adds some minor EMT clothing stuff, and fixes#8020 and the medgreen
armband while I was piddling around in sprites.
EMT alt title and indent fixed.
Now less broken.

Moves them away from 'tie' legacy - path change, and different code files.
Changed single hastie var into accessories list, to allow multiple articles worn at same time. Updated all affected places in code to work with it.
Currently any number of decorative accessories can be attached, one utility (holster/webbing) and one armband.
* Refactors projectile Bump()
* Converts projectile_type var strings to paths
* Reorganizes bullet projectile paths
* Made a pass through all the bullet_act() definitions. Mainly ensured that damage_type is checked when dealing damage to certain objects. Removed stupid /turf bullet_act() override, replaced with on_hit() overrides on the relevant projectiles.
* Adds shotgun pellets projectile. Adds Raptor's shotgun slug sprite.
* Gives stunshots more of their own identity, refluffs them as taser cartridges for shotguns. They still aren't obtainable anywhere unless spawned.
* Makes projectiles pass through girders and cultgirders with a certain probability, unless the girder itself was clicked.
* Projectiles are also able to pass through grilles. Low damage projectiles have a chance to be blocked by grilles. High damage projectiles have a chance to have some damage absorbed by the grille.
* Makes projectiles for blanks invisible.
* Adds flash bullet types
* Adds support for 'penetrating' projectiles
* Swaps .45 and 9mm projectile types. .45s hit slightly harder, 9mils have more ammo capacity.
Removes the mounted laser cannon from the ERT hardsuits and instead
provides a single cannon for the team.
Moves the sidearms out to the other ert stations to make it more clear
that they may be used by other ERT roles.
Fixes rechargers now working in Centcom areas.
Instead of magic type bits, the infection protection value of clothing is mostly based on it's bio armor value, which is much more flexible. Also gloves and shoes to contribute to protection values, and adjusts surgical mask bio protection.
Hardsuits gain voidsuit level bio protection, when sealed.
Wearing a face mask helps prevent others from catching airborne diseases.
Also fixes#7909
`maths.dm`:
Removed `var/const`s `E`, `Pi`, `Sqrt2`.
`setup.dm`:
Re-added `PI` here, and added `Sqrt2`, `E` as macros.
The reason for this is that macros have a performance improvement over `var/const`s.
`lists.dm`
Changed the formatting of the `BITTEST(...)` etc. macros so that they can be found by
searching for `#define BITTEST`
`rig.dm`:
Fixed unknown variable error resulting from the usage if `STOPSPRESSUREDMAGE`
which was renamed to `STOPPRESSUREDAMAGE` in one of my earlier commits.
Others:
Replaced constant variable `Pi` usage, with macro `PI`.
`code/setup.dm`:
Fixed large amounts of indenting.
Fixed large numbers of comments and their clarity.
Added parentheses to macros using expressions.
Added FIXME for unused duplicated macros, without certainty of their requirement.
Removed some duplicate macros present. (`BRUTE`, `BURN`, etc.)
Removed macro `PI`, and replaced instances of its use with `var/const/Pi` from `maths.dm`
`code/global.dm`:
Fixed large amounts of indenting, added newlines to long single-lined list definitions.
Slightly clarified comments.
- Adds CELLRATE (and SMESRATE for SMESs) into drain_power proc.
- Adds "amount" parameter to drain power proc, sets the powersink module to 40kW draw (80 cell charge/s), which should correspond with normal cell recharger.
- Removes drain_power from all machinery, and adds drain_power to machinery/power. This means you can only drain from machines that have something to do with wiring or electricity.