Fixes for potential entity related crashes Fixed regression with CalcViewModelView due to admire anim fix Make menu state FrameTime use doubles VGUI tweaks * Make Lua panels never overlap main menu (except for modal panels, TBD) * Clientside DrawOverlay is no longer called from menu overlay panel * DrawOverlay and CaptureVideo hooks use pooled strings * DrawOverlay and PostRenderVGUI are now called just before main menu rendering (PostRender still is called after, TBD) * Disable PreRender return value while main menu is open Minor cleanup - give internal GMod panels better names Move PostRender hook slightly earlier to never cover up main menu * Specifically just before rendering the overlay panels/hooks (DrawOverlay/PostDrawVGUI), exactly where ClientMode::PostRender is called