FIX: Nice axis bounds calculation when flipped
FIX: Nice axis bounds calculation when flipped

When the axis bounds are inverted (i.e. max < min),
the tick labels min and max were calculated incorrectly.

Change-Id: I40b95074bc6865b193a1334dd65a8356cbc13faf

sankhesh/VTK,candy7393/VTK,jmerkow/VTK,johnkit/vtk-dev,mspark93/VTK,sankhesh/VTK,demarle/VTK,sankhesh/VTK,ashray/VTK-EVM,johnkit/vtk-dev,sumedhasingla/VTK,SimVascular/VTK,candy7393/VTK,sumedhasingla/VTK,gram526/VTK,mspark93/VTK,johnkit/vtk-dev,demarle/VTK,johnkit/vtk-dev,SimVascular/VTK,hendradarwin/VTK,jmerkow/VTK,mspark93/VTK,SimVascular/VTK,msmolens/VTK,msmolens/VTK,sankhesh/VTK,keithroe/vtkoptix,jmerkow/VTK,demarle/VTK,SimVascular/VTK,ashray/VTK-EVM,hendradarwin/VTK,candy7393/VTK,sumedhasingla/VTK,ashray/VTK-EVM,demarle/VTK,hendradarwin/VTK,ashray/VTK-EVM,sumedhasingla/VTK,hendradarwin/VTK,mspark93/VTK,sankhesh/VTK,jmerkow/VTK,sumedhasingla/VTK,candy7393/VTK,keithroe/vtkoptix,keithroe/vtkoptix,gram526/VTK,SimVascular/VTK,SimVascular/VTK,hendradarwin/VTK,mspark93/VTK,sumedhasingla/VTK,candy7393/VTK,msmolens/VTK,jmerkow/VTK,msmolens/VTK,ashray/VTK-EVM,sankhesh/VTK,sumedhasingla/VTK,keithroe/vtkoptix,jmerkow/VTK,keithroe/vtkoptix,gram526/VTK,demarle/VTK,jmerkow/VTK,ashray/VTK-EVM,mspark93/VTK,ashray/VTK-EVM,SimVascular/VTK,keithroe/vtkoptix,msmolens/VTK,candy7393/VTK,demarle/VTK,jmerkow/VTK,candy7393/VTK,johnkit/vtk-dev,gram526/VTK,gram526/VTK,candy7393/VTK,hendradarwin/VTK,msmolens/VTK,mspark93/VTK,msmolens/VTK,gram526/VTK,SimVascular/VTK,keithroe/vtkoptix,sankhesh/VTK,johnkit/vtk-dev,demarle/VTK,johnkit/vtk-dev,mspark93/VTK,sumedhasingla/VTK,keithroe/vtkoptix,gram526/VTK,msmolens/VTK,ashray/VTK-EVM,demarle/VTK,sankhesh/VTK,hendradarwin/VTK,gram526/VTK