Fix bad validation rules

apps/map/migrations/0060_auto_20180523_1659.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.6 on 2018-05-23 16:59
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('map', '0059_auto_20180519_1801'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='casestudy',
+            name='project_life_span',
+            field=models.CharField(blank=True, help_text='e.g. 12 years of production, 15 years overall', max_length=200, verbose_name='Project life span'),
+        ),
+    ]