Update wizard button after setting record values

record-modified is not triggered when setting value via default.

issue4202
review7611002
Don't add line if key is missing when displaying dict widget

issue4208
review5671002
Use field domain also to search key for displaying

Searching the key for displaying should also use the field domain otherwise it
could use the wrong key definition to display the value because there are not
garantee to have a unicity for the name of the key.

issue4199
review13541002