修改后端problem中的的命名规范

problem/migrations/0005_auto_20150813_1807.py

@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('problem', '0004_auto_20150813_1459'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='problem',
+            old_name='description_input',
+            new_name='input_description',
+        ),
+        migrations.RenameField(
+            model_name='problem',
+            old_name='description_output',
+            new_name='output_description',
+        ),
+    ]