Mises à jour et notes de mises à jour

Orna: The GPS RPG

* New buildable building: The Jeweller
* New spells
* Added a layer selector to the overworld map
* Signup & login improvements
* Sprite updates
* Assets for T10 classes (classes to be unlocked at a later date)
* Assets for World Raids (to be unlocked at a later date)
* Bug fixes