Correct english translation for FGSEARCH (refs #3885)
Merge pull request #793 from Eric-Brison/3.2-E2900

3.2 e2900 (closes #2900, closes #2492)
Merge pull request #792 from thingthing/3.2-I3885

Correct english translation for FGSEARCH (closes #3885)
clean po and update untranslate TOOLBOX_fr (refs #2900)