Updated the Main Menu with the new tiles and more level types

...s/default/modules/boot/data/general/grids/underground.lua

...s/default/modules/boot/data/gfx/particles/breath_fire.lua

.../default/modules/boot/data/gfx/terrain/crystal_alpha1.png

.../default/modules/boot/data/gfx/terrain/crystal_alpha2.png

.../default/modules/boot/data/gfx/terrain/crystal_alpha3.png

.../default/modules/boot/data/gfx/terrain/crystal_alpha4.png

.../default/modules/boot/data/gfx/terrain/crystal_alpha5.png

.../default/modules/boot/data/gfx/terrain/crystal_alpha6.png

.../default/modules/boot/data/gfx/terrain/crystal_floor1.png

.../default/modules/boot/data/gfx/terrain/crystal_floor2.png

.../default/modules/boot/data/gfx/terrain/crystal_floor3.png

.../default/modules/boot/data/gfx/terrain/crystal_floor4.png

.../default/modules/boot/data/gfx/terrain/crystal_floor5.png

.../default/modules/boot/data/gfx/terrain/crystal_floor6.png

.../default/modules/boot/data/gfx/terrain/crystal_floor7.png

.../default/modules/boot/data/gfx/terrain/crystal_floor8.png

...s/default/modules/boot/data/gfx/terrain/granite_door1.png

...ault/modules/boot/data/gfx/terrain/granite_door1_open.png

...modules/boot/data/gfx/terrain/granite_door1_open_vert.png

...s/boot/data/gfx/terrain/granite_door1_open_vert_north.png