filter "medianValue" changed the input image

[Johann Krauter]

The image of the input dataobject becomes striped after the filter (observed with a 2d dataobject of type uint16 image)

Hint: calculation takes place in dataObjectFuncs::medianValueFunc possible offenders!?: - temp = ito::makeContinuous(*dObj); //always a copy - temp2.push_back(rowPtr[c]); - temp2.reserve(dObj->getTotal());

[M. Gronle]

This bug is a bug in ito::DataObjectFuncs::medianValueFunc, and therefore moved to the issues of the itom repository: https://bitbucket.org/itom/itom/issues/86/ito-dataobjectfuncs-medianvalue-changes