Corgi Inventory Update

* Removing items works correctly
* Item duplication bug for non-accepted items fixed
* Corgi inventory refreshes correctly
* When a corgi rejects a head or body item, it will drop in their square (You put X on Y, but they shake it off!), or, with some probability, an adjacent square
* Descriptive texts improved
* Plastic Explosives can be planted on the corgi through the inventory window