1. Made location optional, 2. Added multicountry select option, 3.

Improved form labels, help texts and templates.

dav_events/migrations/0010_auto_20180207_1138.py

@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.9 on 2018-02-07 11:38
+from __future__ import unicode_literals
+
+import dav_events.choices
+from django.db import migrations
+import django_countries.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dav_events', '0009_auto_20180207_1118'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='event',
+            name='country',
+            field=django_countries.fields.CountryField(countries=dav_events.choices.CountryChoiceSet, max_length=2),
+        ),
+    ]