Add edit mode for email "profile" settings.

Plus some related tweaks, needed to make that happen.

tailbone/forms/__init__.py

@@ -26,7 +26,7 @@ Forms
 
 from formencode import Schema
 
-from .core import Form, Field, FieldSet
+from .core import Form, Field, FieldSet, GenericFieldSet
 from .simpleform import SimpleForm, FormRenderer
 from .alchemy import AlchemyForm
 from .fields import AssociationProxyField

tailbone/forms/core.py

@@ -30,8 +30,9 @@ from edbob.util import prettify
 
 from rattail.util import OrderedDict
 
-from pyramid.renderers import render
+import formalchemy
 from formalchemy.helpers import content_tag
+from pyramid.renderers import render
 
 
 class Form(object):
@@ -108,3 +109,12 @@ class FieldSet(object):
     def __init__(self):
         self.fields = OrderedDict()
         self.render_fields = self.fields
+
+
+class GenericFieldSet(formalchemy.FieldSet):
+    """
+    FieldSet class based on FormAlchemy, but without the SQLAlchemy magic.
+    """
+    __sa__ = False
+    _bound_pk = None
+    data = None