Check empty value options

[ShootingStar91]

In some fields we have '' (empty string) as an option. There are some problems with how the code currently handles these:

• The option visually is very narrow, which makes it hard to even notice
• the code for the editingcomponents may not work well with this
• One solution could be to make a reusable option object like const noValue = { value: '', displayValue: 'No value' }
• But is it different for the database to have empty string or null? Does this vary for different fields? Are there fields that cannot have null but can have '' as a valid value

Also,

• this was removed from some options so check that it is where it should be (localitytab approx_coord maybe?)

[ShootingStar91]

make it "No value"

[ShootingStar91]

make something like optionDisplay which is displayed only in option, but in read mode we can show empty string

[ShootingStar91]

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