fundgoal: Add goal providers.

www/conservancy/apps/fundgoal/admin.py

@@ -1,7 +1,14 @@
 from django.contrib import admin
-from conservancy.apps.fundgoal.models import FundraisingGoal
+from conservancy.apps.fundgoal import models as fundgoal_models
 
 class FundraisingGoalAdmin(admin.ModelAdmin):
     list_display = ('fundraiser_code_name', 'fundraiser_goal_amount')
 
-admin.site.register(FundraisingGoal, FundraisingGoalAdmin)
+class GoalProviderAdmin(admin.ModelAdmin):
+    fields = [
+        'fundraising_goal',
+        'provider_name',
+    ]
+
+admin.site.register(fundgoal_models.FundraisingGoal, FundraisingGoalAdmin)
+admin.site.register(fundgoal_models.GoalProvider, GoalProviderAdmin)

www/conservancy/apps/fundgoal/migrations/0002_goalprovider.py

@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.7 on 2018-11-18 12:11
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('fundgoal', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='GoalProvider',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('provider_name', models.CharField(max_length=512)),
+                ('fundraising_goal', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='fundgoal.FundraisingGoal')),
+            ],
+        ),
+    ]

www/conservancy/apps/fundgoal/models.py

@@ -18,3 +18,14 @@ class FundraisingGoal(models.Model):
     
     class Meta:
         ordering = ('fundraiser_code_name',)
+
+
+class GoalProvider(models.Model):
+    fundraising_goal = models.ForeignKey(
+        'FundraisingGoal',
+        on_delete=models.CASCADE,
+    )
+    provider_name = models.CharField(max_length=512)
+
+    def __unicode__(self):
+        return self.provider_name