Shield Wall has a new graphical effect

game/engines/default/engine/interface/ActorTalents.lua

...ngines/default/engine/interface/ActorTemporaryEffects.lua

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

...odules/tome/data/gfx/particles_images/rotating_shield.png

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

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

game/modules/tome/data/talents/techniques/weaponshield.lua