Changes on kicks and stomps
No stomping when grabbing
Fixes #7111
Fixes traumatic_shock affecting species with NO_PAIN
Merge pull request #7535 from mwerezak/disposal-bin

Fixes #7111
Merge pull request #7539 from mwerezak/shock

Fixes traumatic_shock affecting species with NO_PAIN
Fixes DeathSquad helmet to be spaceproof once more.
Fixes Deathsquad suit to be spaceproof again
Merge pull request #7540 from meyar/master

Deathsquad/SWAT armor spaceproofing fix
Changeling Fix
- Fixes #7550 and one other bug which is not on issue tracker
- Uncomments one line of code which caused #7550, considering reasons for this being commented out no longer apply. (parasting is no longer cheap OP ability you have from start) Changeling rewrite is probably going to occur soon anyway.
- Removes one line which caused bug with "Absorb" ability - victim was immediately absorbed after the "You stab the X with proboscis" part, instead of waiting few seconds as it should.
Fixes merge conflict, uses force
Merge remote-tracking branch 'upstream/dev-freeze' into dev-freeze

Conflicts:
	baystation12.dme
	code/modules/mob/living/carbon/human/unarmed_attack.dm
Xeno balancing

Makes xenos slightly faster across the board, so that sentinels are now
on par with humans in terms of base speed. Makes facehuggers become
stunned when thrown, removes helmet protection.
Alien weed regeneration now mends broken bones

Also, weed regeneration is reduced unless xenos are resting.
Replaces a few old for loops with visible_message()
Converts \green macro to span tag
Weed regeneration heals internal organs
Merge pull request #7556 from mwerezak/xenobalance

Xeno Balancing
Fixes "To shuttle" button in nuke traitor panel
Merge branch 'combat_fixes' of https://github.com/Hubblenaut/Baystation12 into dev-freeze