added base for SPSS export
PSPP screenshots for documentation
diverse improvements...
added ctrl/alt modifier to open saved file in default app/skip save dialog
added typ enumber and some flexibility to fieldname_list and pdf_document
added typ enumber and documented even two more...
added decorator to check which modifiers are being pressed
Merge branch 'develop' into deco
added Tech-Dok.pdf to git-repo (and README.md)
added cx_freeze setup script and managed it to work with an adapted savReaderWriter.
resolved merge conflict
cleaned up setup_cx_freeze.py
added highly optimzable code to save_sav-method and some enhancements to structure
added multi_select-typ very quick and considerably dirty
emergency commit
lots of additions, improvements, and a "raising-sheet" for the current (or any) participant
fixed stretching the text instead of numbers in rightGrid
managed to create Nullsoft installer with cx_freeze-exe (and some minor adjustments)
fixed tiny bug
beside other things "live" database change (without restart)