Changed values of import.subcubeMode
The possible values of import.subcubeMode were changed from 'pix' and 'wcs' to 'pixel' and 'world' to be consistent with those of SCfind.kernelUnit.
Updated user manual
Changed parameter name of steps.doSubCube
The name of the parameter was changed from 'steps.doSubCube' to 'steps.doSubcube' to be consistent with 'import.subcube' and 'import.subcubeMode'.
Changed 'sub-cube' to 'subcube'
Changed the spelling from 'sub-cube' to 'subcube' in all labels and descriptions to be consistent with the actual control parameter names.
Changed name of 'reliability.relThresh'
Changed name of 'reliability.relThresh' to 'reliability.threshold' to be consistent with other parameter names.
Merge branch 'master' of https://github.com/SoFiA-Admin/SoFiA into HEAD