- 3rd person form: "Does" this or that.
- For all const methods that return something: "Returns" ...
- For boolean return value: "Returns true if " ...

Tried removal of Rotate from Geometry which however is required by IsGISAXS07.
Will be reverted in a minuted.

Insert new header comment block, remove old one, manually improve file comments (defines / implements), change brief function description to doxygen format, remove some outcommented code

Bug fix in ProgramOptions with wrong determination of path to GISASFW home, symlinks to ./App are also now working

Adapted to directory structure