Check_MK Werk 5592: Fixed broken graph panning (at least in Firefox)

ID: 5592 Title: Fixed broken graph panning (at least in Firefox) Component: metrics Level: 1 Class: Bug fix Version: 1.5.0i3 The graph panning (moving vertical and time axes with drag/drop) was not working as expected in all situtations. At least when using the current Firefox it did not work.