Reversing clip does not work on some locales
I'm using locale "et_EE.UTF-8", which is using a special encoding for minus character, as described in #41 (closed).
If I change clip speed and check "Reverse clip" option, then the clip still runs with the original speed and direction. The same happens if I choose "Clip Jobs" -> "Duplicate clip with speed change" and set "Percentage" to a negative value.
If I start Kdenlive with command "LC_ALL=C kdenlive", both options for clip reversing work fine.