gui: improve reconstruction parameters: add tooltip of the url on the reconstruction parameters overview

* remove calculation area (volume for now)
* remove calculation method (one value per frame...)

# Conflicts:
#	tomwer/core/scan/scanbase.py

Rename IntensityNormalizationProcess to IntensityNormalizationTask and adapt to latest ewoks standard

# Conflicts:
#	tomwer/core/process/reconstruction/test/test_saaxis.py

# Conflicts:
#	orangecontrib/tomwer/widgets/reconstruction/test/test_axis.py

- only done for Checbyshev and None
- other modes will raise an error for now.

# Conflicts:
#	tomwer/core/process/reconstruction/nabu/nabuslices.py

# Conflicts:
#	tomwer/core/process/reconstruction/nabu/nabuslices.py
#	tomwer/core/process/reconstruction/nabu/nabuvolume.py