Add contact and share app

share/models.py

@@ -0,0 +1,19 @@
+from django.db import models
+from django.contrib.auth.models import User
+
+class UserShare(models.Model):
+    """Record a repo shared to a user."""
+
+    from_user = models.ForeignKey(User, related_name="myshare_items")
+    to_user = models.ForeignKey(User, related_name="share2me_items")
+    repo_id = models.CharField(max_length=36)
+
+
+class GroupShare(models.Model):
+    """A repo shared to a group."""
+
+    group_id = models.CharField(max_length=36)
+    repo_id = models.CharField(max_length=36)
+
+    class Meta:
+        unique_together = ("group_id", "repo_id")