I tried to localize RapidTabs today but I could not do it. I translated the POT file and placed "rapidtabs-fa.po" and ""rapidtabs-fa.mo" in the section's folder but it did not work. I copied the sections folder to my child theme's folder but it did not work either.
(By the way, RapidTabs was not in the above list. That's why I chose TwinShot.)