Fixes #3753
Merge pull request #3754 from jack-fractal/master

Fixing changeling stasis power and admin healing effect to heal organ damage
Merge pull request #3755 from Kilakk/master

Fixes #3753, the fax machine no longer turns invisible when dragged around
ERT mecha beacons.
Mecha weapons.
Merge pull request #3761 from Segrain/master

Mecha bugfixes.
Smallfix.
Order fix.
Merge pull request #3762 from Segrain/master

Small mechafix.