Update Spanish translation and more

* Adds new translations
* Update translations
* Make ranslatable : renpy/common/_developer/developer.rpym

I do not know think of how to translate these terms.
* **Image Location Picker** on Developer Menu.
* **"The bleeding edge of Ren'Py development."** on updater.rpy. I left as "Versión de desarrollo de Ren'Py." (Development version of Ren'Py.)