First rough pass at adding customer orders model and some views/templates/admin stuff for same

InvenTree/build/migrations/0004_auto_20180417_2127.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11 on 2018-04-17 11:27
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('build', '0003_build_part'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='build',
+            name='status',
+            field=models.PositiveIntegerField(choices=[('20', 'Allocated'), ('30', 'Cancelled'), ('40', 'Complete'), ('10', 'Pending')], default=10),
+        ),
+    ]