Apparently forgot to migrate after adding title_reel_assignments.
Instead of dyn-creating a title, dyn-add existing title(s).
Because I had to develop on Windoze.
Merge branch 'change_dyn_form_to_add_existing_titles' into nested_form_gem
Change Titles beg_- end_date columns to strings rather than integer,dates.
Fixed typo for var name; prompt on pull-down.