Merge pull request #6618 from Zuhayr/dev

Bunch of minor fixes for xenomorphs and borer husks.
Completes the transfer to the refreshed announcement system.
Fixes #6609, supplements #6610

Haphazardly adds a cell charger and normal recharger to the vox skipjack, along with an extra screwdriver.
Vox and Syndicate armor siemens coefficient changed to match ERT.
Replaced all mapped instances of the stunbaton to loaded variants. Gave people on the Research Outpost a way to recharge their baton.
Merge pull request #6626 from PsiOmegaDelta/Announcements

Annoncement Update
Merge pull request #6624 from PsiOmegaDelta/Vox

Fixes #6609, supplements #6610
Adds another AI sprite
Merge branch 'dev' of https://github.com/Baystation12/Baystation12 into working
Remaps power stations
 - Also fixes a typo in the previous AI commit.
Removes errorous step_y references.
Map fixes
Can now de-construct fire alarms.
Merge branch 'dev-freeze' of https://github.com/Baystation12/Baystation12 into dev
merge resolution, mostly removing attack_alien() from modified files.
Merge pull request #6662 from Zuhayr/dev

Dev
Merge pull request #6661 from PsiOmegaDelta/Fire

Can now de-construct fire alarms.
Merge branch 'dev' of https://github.com/Baystation12/Baystation12 into working

Conflicts:
	nano/images/nanomap_z1.png
Merge
Merge pull request #6637 from Gamerofthegame/mapwork

Map update - Powerstations and more!
Merge pull request #6670 from Zuhayr/dev-freeze

Dev freeze
Thought I had done these before, turned out I did. Single-linebreak conflicts woo.