[evita] ui/controls: Tidying up |ui::TableControl|.
[evita] ui/controls: Replace |ui::TableControl::RenderIfNeeded(gfx::Canvas*)| by |ui::TableControl::OnDraw(gfx::Canvas*)|.
[evita] ui: Use |RequestAnimationFrame()| in |ui::Widget::SchedulePaintInRect(const gfx::Rect&)| and utilzie it.
[evita] ui/controls: Make document list show after switching tab.