Correctly track which plural form is selected.
Works from programmatic navigation and from clicking the plural form directly
Should copy source to the correct plural form.
Should copy suggestions to the correct plural form.
Focus translation textarea when a phrase row is selected.
By navigation from up/down or save-and-next
By click anywhere in row
Focus suggestion panel search textbox upon switch to text search.
Must not steal focus at other times
Focus should not be stolen by text flows