Cinch's Missing Blocks

Changes

• Added chiseled purpur
• Added end stone pillar
• The top and bottom of the cut sandstone wall now use the smooth sandstone texture
• The top and bottom of the cut red sandstone wall now use the smooth red sandstone texture
• I tried to apply this texture change to the vanilla sandstone and red sandstone walls but forge is weird and doesn't load the correct texture. This will be fixed in future versions and for now those two vanilla wall variants are just as they have always been.
• Tweaked some textures
• Many small tweaks and fixes