Dynamic Head Showcase.
A possible "MVP" for shipping Dynamic Heads:
* Redid category structure to make heads top-level, add subcats for Facial Hair, Eyelashes, Eyebrows.  
* Removed "Face" subcat under accessories, that's now split into "Eyes", "Nose", "Mouth".
* Dynamic Heads and DH-friendly assets have 'gradient' highlight on thumbnails.
* Experiment with Dynamic Head thumbnails doing "slideshow" to emphasize that these heads change.
* Animtations and Emotes include appropriate facial expressions.
* Changes persist outside of in-game editor.  Face should change while animating and emoting in-game.


There are currently no running experiences.