Improved the look of wildfire/tempset/uttercold/crystaline focus visual effects

game/modules/tome/ai/tactical.lua

game/modules/tome/class/Game.lua

game/modules/tome/data/gfx/particles/shader_ring.lua

.../modules/tome/data/gfx/particles/shader_ring_rotating.lua

game/modules/tome/data/gfx/particles_images/square.png

game/modules/tome/data/gfx/shaders/flames.lua

game/modules/tome/data/gfx/shaders/sparks.frag

game/modules/tome/data/gfx/shaders/sparks.lua

game/modules/tome/data/gfx/shaders/stone.frag

game/modules/tome/data/gfx/shaders/stone.lua

game/modules/tome/data/gfx/shaders/test.frag

game/modules/tome/data/gfx/shaders/test.lua

game/modules/tome/data/talents/spells/ice.lua

game/modules/tome/data/talents/spells/stone.lua

game/modules/tome/data/talents/spells/storm.lua

game/modules/tome/data/talents/spells/wildfire.lua