Merge pull request #4382 from Baystation12/master

master -> dev-freeze
PDA bombs are now more balanced and random.
Keeping the PDA sane.
DNA2 EPISODE 2: Revenge of the Bugs

Made after DNA2 hit /vg/'s main server after no one tested anything.

* Gene activation/deactivation made modular, refactors domutcheck.
* Standardized genetics disks and injectors a bit in response to buffer corruption issues. (Untested)
* Lots of major bug fixes.
* Skin tones fixed.

Still needs further testing. All I did was mess around with monkeys.

Conflicts:
	code/game/dna/dna2.dm
	code/game/dna/dna2_domutcheck.dm
	code/game/dna/dna2_helpers.dm
	code/game/dna/genes/disabilities.dm
	code/game/dna/genes/powers.dm
	code/modules/mob/living/carbon/monkey/monkey.dm
DNA2 Bug Fixes - Part 2 (CHERRY PICK)

We discovered that most of the problems were were having was because of BYOND passing lists (e.g. SE and UI) by-ref instead of the assumed by-val.

This commit adds dna.Clone() and (UI|SE).Copy() where needed.  These should be used where DNA or SE/UI lists are COPIED, otherwise changes made in the reference will affect the real strand.

This change also messes with the gene activation logic.

Conflicts:
	code/game/dna/dna2_domutcheck.dm
	code/game/dna/genes/powers.dm
Missed the gene Life() call.
Fix earlier screwed commit
And now tested in game, with some fixes.
DNA2 rangebug, if any hair/beard/eye RGB values are 0 it won't encode it into the dna.

This is a hacky fix and is temporary until I can sit down and figure out exactly why it's not encoding that block of DNA properly.

The result of it not encoding it into the dna is that if you clone the person they have a random value there that was assigned at round start.
pAI messenger bugfix.

pAI has to be a special little snowflake and have it's own messenger proc instead of letting a AI-PDA handle it.

So, updated it with the newest tnote variable functionality so it can participate.
Merge pull request #4410 from Ccomp5950/dna2-cherrypick

DNA2 Cherry-pick (Dev -> Master)
Chem grenade fixes

Fixes #3986

- Foam reagent inheritance fixed:
The trans_to() proc in Chemistry-Holder.dm was calling handle_reactions() every time it would add and remove reagents with add_reagent() and remove_reagent(). I've added a safety flag to both of these procs (and copy_to()) so that trans_to will not call handle_reactions() until it has added all the reagents to the target container. This allows foam to reliably take on the properties of other leftover reagents.

- Fixed a bug in effect_system.dm that wasn't applying reagents from foam to the environment.

- Tweaked smoke to apply reagent effects after it has stopped moving
This was causing huge reagent spam at the center of the smoke cloud as it was spawning, since they were being applied every time the cloud of smoke moved. Also changed it to apply the effects 2-3 times at longer intervals (2 seconds).

- Smoke also only effects tiles in a 3x3 grid now, rather than 5x5.

- Summary:
Chem smoke does slightly less damage (if it contains damaging reagents)
Chem smoke proc calls reduced by 60-70% (significant lag reduction)
Foam works properly again
Foam proc calls reduced by 70-80%
Minor tweaks and fixes for airlock equipment

- Fixed DP vent pumps not changing direction
- Made airlock_sensor more versatile (and backwards compatible with old airlock code)
- Added airlock_sensor and access_button airlock subtypes for easier mapping
Airlock controller rewrite

- /datum/computer/file/embedded_program moved from embedded_controller_base.dm to code/game/machinery/embedded_controller/airlock_program.dm
- embedded_controller_base.dm cleaned up and identical parts of the controller subtypes were moved here
- embedded_controller subtypes moved to code/game/machinery/embedded_controller/airlock_controllers.dm
- Added nanoUI templates for airlock controllers
- Added a couple of classes to nano/css/shared.css for colouring buttons
- Minor map update to maintain airlock compatibility and fix a broken airlock near virology
Airlock update

- Should now merge
Fixed cable colors

- Fixed a couple of lines of code in power.dmi so that cables correctly update their color
- Fixed the contrast of the cable icons
Code effeciency project: Sun datum

Because of the wrong direction of this sign, every single solar array was being checked for occlusion every tick.

This should fix that right up.

Trackers set to update their angle only when the sun does.

Solar panels set to calculate occlusion every minute (was every tick (though thought to be set to every 6 minutes (36 degrees)), now checks every 6 degrees of sun movement or so)
Merge pull request #4422 from Ccomp5950/sun_fix

Code effeciency project:  Sun datum
Merge pull request #4408 from Loganbacca/airlock-merge

Airlock controller rewrite
People in lobby won't see PDA messages.