Was fixed for Saxs but not Waxs
bugfix in integrate2d for wrong mask calculation
fix mask reading issue
Fix issue in diff_tomo relative to the mask.
Adding rayonix mx series detectors

Adding rayonix mx series detectors:
* mx225
* mx300
* mx325
Documentation: http://www.marresearch.com/pdf/Brochure.mx.pdf
fix issues #84
Related to issue #85
#related to issue #85
Related to issue #85
fix issue #86
avoid updating poni file: copy it in tmp folder.