This merge request has full JS routing for calling specific endpoints. Game is fully playable but doesn't have polling yet. This version already has the UI changes adressed in MR #43 so first merge MR #43 and then this one or only merge this one because it already has the UI changes :) Co-authored-by: LQ63 <lkhermann@web.de> Reviewed-on: #50 Reviewed-by: Janis <janis-e@gmx.de>