Adding compatibility stuff for themes

During our migration to federation some interfaces were changed. We
should not have done that so fast.

Provide a compatibility layer so that old themes work

mediagoblin/db/models.py

@@ -586,6 +586,16 @@ class MediaEntry(Base, MediaEntryMixin, CommentingMixin):
     ## TODO
     # fail_error
 
+    @property
+    def get_uploader(self):
+        # for compatibility
+        return self.get_actor
+
+    @property
+    def uploader(self):
+        # for compatibility
+        return self.actor
+
     @property
     def collections(self):
         """ Get any collections that this MediaEntry is in """
@@ -982,6 +992,17 @@ class Comment(Base):
     # When it was added
     added = Column(DateTime, nullable=False, default=datetime.datetime.utcnow)
 
+    @property
+    def get_author(self):
+        # for compatibility
+        return self.comment().get_actor  # noqa
+
+    def __getattr__(self, attr):
+        try:
+            return getattr(self.comment(), attr)  # noqa
+        except Exception as e:
+            print(e)
+            raise
 
 class TextComment(Base, TextCommentMixin, CommentingMixin):
     """