installer:slideshow:update icon and delete game page

tower:https://tower.im/projects/8f19f0bf0e754f0b82ef2c24bc230973/todos/142c5842d99447cfa1898c7acb126d4c/
Change-Id: Ib18f3cbd77c33e8ded5e8f2481d3abb4843caa4d