this fixes where tag values of fields with referenced strings can become corrupted when the sub-field has restricted `options`, and an unavailable option is entered manually into the field.
important for openstreetmap/id-tagging-schema#891
fixes a bug where `multi/many/semiCombo` options are not selectable immediately after they were removed from a field, when the field does not use taginfo to fetch options
instead of `"strings": { "options": { "<tag-value>": "<translatable-string>", …` it is now also supported to have:
```
"strings": {
"options": {
"<tag-value>": {
"title": "<translatable-string>",
"description": "<translatable-string>"
},
…
```
because the common tag vs. left/right tag situation can be different for different entities in the multiselection, the approach to merge/split/update the tags needs to be made on a per entity basis
this introduces a new way to specify tag changes: a callback function which is called for each to be modified entity
* Clamp degree values in `direction` fields between 0 and 359 degrees, fixes#9386
* Only match cardinal values to numbers in `direction` fields
* Disable increment/decrement buttons on number fields if the input value is not numeric or when there is a multi-selection with conflicting values
* Fix/implement reverse operation for semicolon delimited `direction` values
* pressing return/enter doesn't deselect the entity anymore
* predefined ("static") field options are always listed in the combobox dropdown, even if taginfo doesn't include them (because of low usage)
* (raw) tag values can also be entered for localized strings
* static localized strings can be used before taginfo response is received (useful when taginfo is slow or unavailable)
* fixes some bugs which can be triggered when taginfo is slow
* fixes a bug where the autocomplete dropdown doesn't work properly when tags have "few" values
* multiCombo fields can be case-sensitive now
* previously, this check was based on the "fraction" of the respective tag value, which excluded more values for common tag keys, but fewer for less common ones.
* this sets a limit of 100 uses for undocumented tags (key=value pairs)
* tags with a wiki page are always allowed
* this harmonizes the heuristic of which tags to show between preset fields and the raw tag editor (previously, there was an additional `count > 10` filter present in combo fields, which is now uncessary)
closes#9227
