Fix ci

See merge request !13

[CI] add notebooks tests

See merge request !12

[orange-add-on][noise reduction] hot fix if user ask for validation and hasn't try to update/apply noise reduction first

Orange addon

See merge request !11

Small fixes + jupyter notebook  tutorial on Experiment and operations

See merge request !10

Better experiment definition and deal with several dimension

See merge request !9

- also remove one outdated unit test

- _MappingBase.dim -> _MappingBase.dims
- rework IntensityMap and gradient removal, the value of the delta has still to be given mannually (but should come from the range of the unique values)
- add testFullSteam to check the full treatment without GUI
- rework DimensionGUI to display if asked the unique values for each dimensions once fit has been done

- now OverwritingOperation can set data_flatten but not data. Might evolve, it depends how we saw things.

- add also unit test for it.
- this is quiet a raw version, has to be tested again and wildly optinized

- adapt shift (wok with data_flatten but should probably be extended latter)
- adapt noise reduction (work with data_flatten)
- remove the data reduction widget because should be highly modify since the numpy.ndarra.view in the experiement.data appear. Should be re-done