Episode 3: Coat buttoning

In which Garmentf acquire Mobility, Complaintf regarding the Contraft of Colourf get Adreffed and Plates of Copypafta are made.

So yeah, adds a Toggle Coat Buttons verb to all of the coats I made that works the same as labcoat toggling (i.e. icon_state-based), playtested to weed out bugs. 

Also introduces further tweaks to the sprites (just manually dimmed the colors of the outlines and some details like the shoulder seam on the red and blue coats to make them crisper).