Add title and full desc override fields in course-run model.

EDUCATOR-717

course_discovery/apps/publisher/migrations/0056_auto_20170621_1712.py

+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.7 on 2017-06-21 17:12
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('publisher', '0055_auto_20170620_1500'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='courserun',
+            name='full_description_override',
+            field=models.TextField(blank=True, default=None, help_text="Full description specific for this run of a course. Leave this value blank to default to the parent course's full_description attribute.", null=True),
+        ),
+        migrations.AddField(
+            model_name='courserun',
+            name='title_override',
+            field=models.CharField(blank=True, default=None, help_text="Title specific for this run of a course. Leave this value blank to default to the parent course's title.", max_length=255, null=True),
+        ),
+        migrations.AddField(
+            model_name='historicalcourserun',
+            name='full_description_override',
+            field=models.TextField(blank=True, default=None, help_text="Full description specific for this run of a course. Leave this value blank to default to the parent course's full_description attribute.", null=True),
+        ),
+        migrations.AddField(
+            model_name='historicalcourserun',
+            name='title_override',
+            field=models.CharField(blank=True, default=None, help_text="Title specific for this run of a course. Leave this value blank to default to the parent course's title.", max_length=255, null=True),
+        ),
+    ]

course_discovery/apps/publisher/models.py

@@ -300,6 +300,17 @@ class CourseRun(TimeStampedModel, ChangedByMixin):
             "Short description specific for this run of a course. Leave this value blank to default to "
             "the parent course's short_description attribute."))
 
+    title_override = models.CharField(
+        max_length=255, default=None, null=True, blank=True,
+        help_text=_(
+            "Title specific for this run of a course. Leave this value blank to default to the parent course's title."))
+
+    full_description_override = models.TextField(
+        default=None, null=True, blank=True,
+        help_text=_(
+            "Full description specific for this run of a course. Leave this value blank to default to "
+            "the parent course's full_description attribute."))
+
     history = HistoricalRecords()
 
     def __str__(self):