Merge pull request #4671 from kobotoolbox/add-khmer-ui-language

Add Khmer to supported UI languages

Author: jnm

kobo/settings/base.py

@@ -654,6 +654,7 @@ def __init__(self, *args, **kwargs):
         'hu '  # Hungarian
         'id '  # Indonesian
         'ja '  # Japanese
+        'km '  # Khmer
         'ku '  # Kurdish
         'ln '  # Lingala
         'my '  # Burmese/Myanmar