3750 Filters and search should say CHOSE not CHOOSE regarding warnings

https://code.google.com/p/otwarchive/issues/detail?id=3750

Filters and work search said "Choose Not to Use Archive Warnings" when what we wanted was the warning_display_name, "Author Chose Not to Use Archive Warnings."

In related news, we should make that "Creator," not "Author."
I would have finished the {} on one line as I had to think about it.