EDIT

implemented selenium test for PolytomousKeys #4983

adapting the description to the new classification filter option - #4872

abrviated childlabel can be hidden, contribution to #4906: cyprus: Areas missing in advanced search distribution filter widget

sorting areas in natual order, contribution to #4906: cyprus: Areas missing in advanced search distribution filter widget

better handling of area terms in case of mixed vocabularies

using recommended getTitle method

setting new text for classification filter, solves #4872

• some text fine-tuning

• changed "derivate" to "derivatives"

• added null check