New background for inventory

I disliked the vanilla background for the inventory, crafting, ecc menus, so I decided to mod it, now instead of all black it will display an old leather map of the Witcher world :) hope someone will like it, have fun :)

A big thanks to theLastWitcher fo this tutorial on how to mod menu background, it was really helpful for a dumb modder like me ;)

tutorial: https://www.reddit.com/r/witcher3mods/comments/4hjyna/a_tutorial_on_how_to_change_the_black_background/

Alternative version: I tried to bring back the background from the gameplay preview of 2014, now you can also choose a "Red mutagen background"...it's not perfect, modeditor compress the background, but I had not any better pictures, if any of you has some high quality mutagen wallpaper feel free to link it to me, I will try to improve my version :)

1. 1: fixed the panel_common, now the mod uses the inventory panel from patch 1. 22 instead of patch 1. 12, thanks to KasparsBITELV for pointing that out ;)