fix(locale): Adding fuzzy option to po2json

Adds the `fuzzy` flag to fix the missing Hebrew translation (everything passes polint locally after running `$ grunt po2json polint`)
Also adds a utf8 charset to the German translation. This should cause the umlauts to appear as expected, and this works locally for me. If this works in stage/prod, I can fix all the other PO files (either here or in the l10n repo).

Closes #638