ItemAdd(): more re-ordering of tests to match IsHovered() + comments
ItemAdd(): more re-ordering of tests to match IsHovered() + comments

burningreggae/imgui,ggtucker/imgui,Flix01/imgui,ggtucker/imgui,bkaradzic/imgui,aimotive/imgui-glfw,wflohry/imgui-addons,aimotive/imgui-glfw,wflohry/imgui-addons,nProtect/imgui,cmaughan/imgui,burningreggae/imgui,nProtect/imgui,dougbinks/imgui,ocornut/imgui,elect86/imgui,cmaughan/imgui,tom-seddon/imgui,nProtect/imgui,Flix01/imgui,mikesart/imgui,ggtucker/imgui,bkaradzic/imgui,tom-seddon/imgui,ocornut/imgui,bkaradzic/imgui,mikesart/imgui,dougbinks/imgui,ocornut/imgui,Flix01/imgui,cmaughan/imgui,cmaughan/imgui,elect86/imgui