Some places used `IFACE_("For Each Element " UI_MENU_ARROW_SEP "
Main")`, which doesn't work because the arrow separator character is
not extracted by the translation regex. This results instead in:
"For Each Element Main" (two spaces).
This commit uses string formatting to add the special character after
translation. It's clunky because translators won't see the actual
string, but not as risky right now as trying to include those special
characters in message extraction.
42c25d683f