Maps for EXPlorer

I have completed and fixed the maps for the EXPlorer mod by xush https://github.com/GutZuFusss/EXPRemake

List of changes:
• Fixed bugs with entities
• Removed unnecessary images, and also moved default images to "External"
• Added the missing unhookable texture to nuby_explore
• Lightened the difficulty of the exp_ranid map, as it was unfairly difficult before
• Created a new map: exp_outpost

Download link: https://github.com/BRONOOB156/Teeworlds … r-maps.git