Fix rupluralize tag

apps/course/templatetags/plural.py

@@ -9,8 +9,9 @@ register = template.Library()
 def rupluralize(value, arg):
     args = arg.split(',')
     try:
-        value = str(0 if not value or int(value) <= 0 else value)[-1:]
-        return value + ' ' + args[0 if value == '1' else (1 if value in '234' else 2)]
+        _value = str(0 if not value or int(value) <= 0 else value)[-1:]
+        value = value + ' ' + args[0 if _value == '1' else (1 if _value in '234' else 2)]
+        return value
     except:
         raise template.TemplateSyntaxError
     return ''