Replaced own country selection with django-countries package.

dav_events/forms.py

@@ -3,11 +3,11 @@ import calendar
 import datetime
 import logging
 from babel.dates import format_date
-
 from django import forms
 from django.contrib.auth import forms as auth_forms, password_validation
 from django.core.exceptions import ImproperlyConfigured
 from django.utils.translation import get_language, ugettext, ugettext_lazy as _
+from django_countries.fields import LazyTypedChoiceField
 from datetimewidget.widgets import DateWidget, TimeWidget, DateTimeWidget
 
 from . import choices
@@ -318,10 +318,9 @@ class LocationForm(EventCreateForm):
     _form_title = _(u'Ort')
     _next_form_name = 'ApproachForm'
 
-    country = forms.ChoiceField(choices=choices.COUNTRY_CHOICES,
-                                initial='DE',
-                                label=_(u'Land'),
-                                )
+    country = LazyTypedChoiceField(choices=choices.COUNTRY_CHOICES,
+                                   initial='DE',
+                                   label=_(u'Land'))
 
     terrain = forms.ChoiceField(choices=choices.TERRAIN_CHOICES,
                                 initial='submountains',