Add Tenancy to Rack Reservations; Fixes #1592 (#1672)

* fixed prefix header to represent new serial "vlan_vid"

* shows option in creation now

* fixed visibility on rack page

* cleanup

* Added view to Tenant page

* Moved migration for update from #1666 and fixed tenant enumeration in FilterForm

* Fixed conflict #1

* Fixed filters from merge and made migration merge

* added tenant to api

* Fixed migrations problem

* Added Tenant to bulkedit option

netbox/dcim/migrations/0050_rackreservation_tenant.py

@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.6 on 2017-10-30 20:43
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('tenancy', '0003_unicode_literals'),
+        ('dcim', '0049_rackreservation_change_user'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='rackreservation',
+            name='tenant',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='rackreservations', to='tenancy.Tenant'),
+        ),
+    ]