ENH: Add button to remove all useless temporary images
BUG: call find_package(Slicer) BEFORE using PYTHON_EXECUTABLE to set SlicerPythonExec var in cxx
BUG: Fix testing on mac and windows by preventing pop ups windows to show
Merge pull request #8 from adrienkaiser/master

BUG: fix Testing with python on linux and pop ups on mac/win