fixing form handling for relationships

ttfrog/webserver/controllers/ancestry.py

@@ -0,0 +1,12 @@
+from ttfrog.db.schema import Ancestry
+from ttfrog.db.manager import db
+from wtforms_alchemy import ModelForm
+
+
+class AncestryForm(ModelForm):
+    class Meta:
+        model = Ancestry
+        exclude = ['slug']
+
+    def get_session():
+        return db.session