Sorting of multiple values changes when edited with different language settings

[osm.mapper999@…]

Since https://josm.openstreetmap.de/changeset/8493/josm the sorting of values is based on the language used.

This leads to the following problem which I found when tagging railway signals:

• somebody creates a tag with a value of e.g. "A;B" with a German JOSM
• another mapper with an English JOSM opens the preset dialogue for this tag and closes it with "Apply" without changing anything.
• the value is now changed to "B;A", because in English the alphabetical order of the values is different.

So now we have a new version of this node/way without actually changing anything. A solution could be that the applied value is always sorted based on the value and not based on the display_values. In the preset window it can still be ordered based on language settings.

(see also ​https://github.com/rurseekatze/OpenRailwayMap/pull/357)