TreeGrid fix:
- use some targeted CSS overrides to repair mysterious weirdness seen in the Edit Tree tools ever since I added a global box-sizing:border-box reset
Some Add Product fixes:
- made product name a required field again (whoops)
- fixed release date validation errors
- fixed issue with initialization of image picker images when creating a new product
- fixed static photomanager call
In short, it was a big mess. Duvanr and Engledogg reported a page crash related to submitting new products with new images selected in the pickers a few days ago--I believe this collection 'o fixes takes care of it.
