new tiles

game/modules/tome/class/Grid.lua

game/modules/tome/class/NicerTiles.lua

game/modules/tome/data/general/grids/underground.lua

...les/tome/data/gfx/shockbolt/terrain/underground_floor.png

...es/tome/data/gfx/shockbolt/terrain/underground_floor1.png

...es/tome/data/gfx/shockbolt/terrain/underground_floor2.png

...es/tome/data/gfx/shockbolt/terrain/underground_floor3.png

...es/tome/data/gfx/shockbolt/terrain/underground_floor4.png

...es/tome/data/gfx/shockbolt/terrain/underground_floor5.png

...es/tome/data/gfx/shockbolt/terrain/underground_floor6.png

...es/tome/data/gfx/shockbolt/terrain/underground_floor7.png

...es/tome/data/gfx/shockbolt/terrain/underground_floor8.png

...me/data/gfx/shockbolt/terrain/underground_tree_alpha1.png

...e/data/gfx/shockbolt/terrain/underground_tree_alpha10.png

...me/data/gfx/shockbolt/terrain/underground_tree_alpha2.png

...me/data/gfx/shockbolt/terrain/underground_tree_alpha3.png

...me/data/gfx/shockbolt/terrain/underground_tree_alpha4.png

...me/data/gfx/shockbolt/terrain/underground_tree_alpha5.png

...me/data/gfx/shockbolt/terrain/underground_tree_alpha6.png

...me/data/gfx/shockbolt/terrain/underground_tree_alpha7.png