This reverts commit 745eb654.

#1235994 by das-peter: Allow to use the value to groupby, so you can use rdf. This changes the api but handles it in a backward compatible way.\n Additional add some documentation and some tests for that feature.

Revert "#1199328 by casey, bojanz: Add typehintings to every place which doesn't break the api. KUDOS"

This reverts commit 553f0e80.

#1153370 by dereine: Fix the case when you have commas but words with spaces in views_break_phrase_string