Log translation string save bug

save en/fr field label = str returns proxy crash because of lazy fetching of verbose_name in model. Mainly an issue for fuzzy strings in .po.

Fix #1 (closed): Make sure translations are up to date
Fix #2: Add labels in forms (this prevents crash but will return empty string for fuzzy translations)
Fix #3 (closed): Save english label to label_fr in Log if label_fr is empty