Don't let django format the date according to the defined lang.

see #400

modoboa/extensions/postfix_autoreply/__init__.py

@@ -58,11 +58,11 @@ def extra_routes():
 
 
 @events.observe("ExtraUprefsJS")
-def extra_js():
+def extra_js(user):
     return ["""function autoreply_cb() {
     $('#id_untildate').datepicker({format: 'yyyy-mm-dd', language: '%s'});
 }
-""" % 'en']
+""" % parameters.get_user(user, "LANG", app="general")
 
 
 @events.observe("UserMenuDisplay")

modoboa/extensions/postfix_autoreply/forms.py

@@ -8,7 +8,8 @@ class ARmessageForm(forms.ModelForm):
     untildate = forms.DateField(
         label=ugettext_lazy('Until'), 
         required=False,
-        help_text=ugettext_lazy("Activate your auto reply until this date")
+        help_text=ugettext_lazy("Activate your auto reply until this date"),
+        localize=False
         )
 
     class Meta:

modoboa/userprefs/views.py

@@ -12,7 +12,7 @@ from forms import ForwardForm, BadDestination, ProfileForm
 
 @login_required
 def index(request, tplname="userprefs/index.html"):
-    extrajs = events.raiseQueryEvent("ExtraUprefsJS")
+    extrajs = events.raiseQueryEvent("ExtraUprefsJS", request.user)
     return render(request, tplname, {
             "selection" : "user",
             "extrajs" : "".join(extrajs)