added calculation of reorder level, order suggesion and max stock
refactored filter selection
refactored filter selection
corrected formula
Merge branch 'feature/ApplyCorrectFormula' into develop

Conflicts:
	webinterface/js/js.js
added search support for article no
ItemsBase.Name is now of type TEXT to be able to contain all necessary characters
changed formatting for table header
added simple execution script to prevent multiple crontab entrys
removed possible error: unrecognized deletes from ItemSupplier records
Merge branch 'develop' into liveSystem