Data Filter - Internal Field Names + Multiple tr()

... allow/use only internal field names (delivered by Column Chooser) in Data Filter expressions
(to overcome problems with special characters in translation an make stored queries working even if the    language is changed) (also tested with own created new fields)

... multipe tr()

Remark: even though BikeScore is working for now - I need to look at that again 

(cherry picked from commit bc4164adab74dd82c0a0307d7d0fbb736f95ef0d)