Merge branch 'master' of git://github.com/melinath/philo

Merge branch 'master' of git://github.com/melinath/philo

* 'master' of git://github.com/melinath/philo:
  Added support for 'editable' to ProxyFields. Tweaked AttributeFieldDescriptor base class to not raise an AttributeError on access. This allows the descriptor to be detected by Django admin validation, allowing the proxy fields to be used (for example) in a ModelAdmin's readonly_fields and list_display fields. This may address the remaining issues in feature #16.
  Tweaked philo migrations to force contenttype creation after migration 0005 so the contenttypes are available in migration 0006. Ordinarily contenttypes are only synced after a complete set of migrations. Also implemented default values on proxy fields; partially addresses feature #16.
  Added unittest for node_url templatetag. Fixed issues uncovered with unittests. Added test fixture. Seems bugfree - as such, addresses feature #12.
  Initial node_url_refactor commit. Revises node_url templatetag to accept args/kwargs like urlnode, using the current or given node's view as the urlconf. with <obj> is retained as a convenient shortcut.
  Initial node_middleware commit. Implements an attribute on the HttpRequest class which handles lazy node evaluation - i.e. request.node is available for all requests, but is only evaluated on first use. Removed all references I could find to node, path, and subpath in Views, which may make for a simpler API. Path and subpath were generally unused and can be extrapolated in other ways; however, should it come to light that they are necessary, they can be added back in.
  Added model validation to Pages; for a page to be valid, its related template must also be valid. Ordinarily, the template would need to be valid in order to exist; however, this should help catch cases where, for example, changes on a filesystem template affect the validity of a database template. Addresses the remaining issues with bug #14.
  Genericized penfield's migrations to allow for variations in the PHILO_PERSON_MODULE setting by adding a central frozen reference to the person module appropriate for use in a South Migration.
  Tweaked QuerySetMapper to return the value's value, in line with the changes to flexible attributes. Adjusted attribute fields to compensate.
  Shunted the responsibility in Entity proxy models for setting an Attribute's value onto the field that manages the model's relationship to that attribute.
  Added migrations to handle transfer of structure and information to and from flexible attributes.
  Added AttributeInlineFormSet to force new Attribute instances to be run through the form's save method for extra processing.
  Added generic relation from attribute values back to Attribute.
  Added migrations from ithinksw/master to melinath/master
  Added search field to tags; added db_index=True to newsletter article full_text to expediate searching.
  Polished AttributeForm to better handle changes to an attribute instance. Introduced apply_data to AttributeValue models to further allow customization. Made an AttributeValue class which must be subclassed to create new attribute values.
  Added AttributeForm to elegantly handle all the fields that should be displayed in the admin related to the instance's value. Tweaked the tabular_collapse template (which was only used for attributes) to display the extra fields. Added the "value_formfield" method to Attribute Value models to allow for the possible future addition of value types.
  Initial flexible attributes commit. Removed Relationship model in favor of a flexible Attribute model with generic foreign keys to an entity and a value type. This should allow for easy addition of attribute types: for example, an attribute with a ManyToMany value.
  Created JSON field, descriptor, and formfield to handle json storage on models uniformly. Addresses feature #26.