Suggestion - Sort function for multivalue tag-fields

Very useful function!

crosslinking to --> German feature suggestion thread $sort(x,sep)
because - despite research - I couldn't find this thread here before posting the same idea.

Differences:

  • I named the function $sort instead of $stringsort for bevity.
  • I named the 3rd param (i.e. sortdirection) a-z and z-a instead of 0/1 for better human readability and user friendliness.
  • With $sortz or $zsort I suggested a possible alternative for inverse sorting in order to keep $sort a 2 param function.