Work on AP-ing media and extending likes and whatnot

Also added two fields to roles model, but haven't ran the various
generators yet

activitypub/importNote.go

@@ -177,6 +177,12 @@ func importRemoteNoteRecursive(
 	// In which case, you need to remove tags that don't exist anymore
 	// and only create the ones not yet stored
 	err = dbgen.NoteToPing.Save(pings...)
+	if err != nil {
+		return "", err
+	}
 	err = dbgen.NoteTag.Save(hashtags...)
+	if err != nil {
+		return "", err
+	}
 	return dbNote.ID, nil
 }