- Changelings no longer receive the absorb objective. The objective was broken because of the interaction between extract DNA and hivemind.
- New objective 'Escape with identity' requires the changeling to have the DNA and ID of their target when escaping
- Hallucination and transformation stings and engorged glands now require 3 absorptions.
- Can't purchase abilities you can't use. Cleans up the evolution menu.
- Extract DNA sting costs 1 point and doesn't count towards absorptions.
- Increased chemical recharge rate from 0.5 to 2. Engorged glands increase recharge rate by 1.
- You can absorb people even if you have their DNA already
Reverts some of the changes in the previous commit.
Fixes the escape with identity objective by adding a list of protected dna.
Merge remote-tracking branch 'upstream/master' into removeAbsorbObjective
- Fixes losing hivemind on respec
- Can only respec when human, can't get stuck in lesser form
- Ticks transit construction
- It compiles
Reverts the glands requiring absorptions.
Chemical recharge rate back to normal.
Fixes whisper formatting hopefully maybe. Fixed #5140
Also does a bunch of other stuff.
* Completed the _strip_html_properly_ proc to also limit the length of the text
* Removed uses of _strip_html_simple_
* Replaced input or redondant trimming/text_copying with the new unified _stripped_input_
Cuts /disease variables from 28 to 23 (includes new ones)
a disease may now have more than one spread type
added "infectivity" variable which replaces a prob(65), defaults to 65
affected_species is now viable_mobtypes, and lists typepaths, this is due to us actually having a species system now so it's confusing
adds defines for a bunch of stuff
Merge branch 'master' of https://github.com/tgstation/-tg-station into DiseaseRework

Conflicts:
	code/game/machinery/bots/medbot.dm
RPED Expansion

Ports https://github.com/NTStation/NTstation13/pull/982 from NT.

Summary of changes:
- The Rapid Part Exchange Device (RPED) can now install stored parts
into unfinished machines! Once you have installed a circuit board to the
frame, use the RPED to add any required parts contained inside, then
finish with a screwdriver!
- Identical parts in the RPED are now shown in groups, just like a
mining satchel.
- RPED storage capacity increased. It can now contain up to 50 parts,
fewer if power cells are added as well.  Maximum weight class of 100
(parts except power cells are class 2).
<b>The storage values are up for discussion. I chose the original values
based on the mining satchel.<\b>

Unrelated:
- The admin-only debug research item now includes plasma and engineering
tech.
WIP - Adding attack animation to most attacks.
Fixing a couple "for(......) show_message()".
Fixes typos and show messages. Fixes attack animation code.
adding attack animation to windoor/attackby
Cleaned up icons

Fixes #5617
Fixed vertical pipes

Fixes #5615
Adding some missing do_attack_animation()
Moving do_attack_animation() proc to mob/living
Fixing the pixel offset issue from beds especially rollerbed.
Fixing the nograv bouncing stopping because of another animation being used.(lying down, jittering, attack animation)
Makes spookoween things a bit nicer.
Fixes infine plating rods bug
Merge remote-tracking branch 'upstream/master' into removeAbsorbObjective