Changed hook_facetapi_QUERY_TYPE_facet_value_alter() to hook_facetapi_value_QUERY_TYPE_alter() for API consistency.

Modified hook names for consistency, started to make the widgets apply to all realms, refactored code to improve application flow.  Getting stuck on an ariplane makes you productive.

Added breadcrumb navigation to facet configuration forms, changed name of sort options, removed facet breadcrumbs.

Removed realm definition caching, because it is actually slower than dynamically loading the realms on each page load.

Took @pwolanin's suggestion and standardized return value of facetapi_realm_render() to always be an array.  Removed theme hook option from realm definition.