Added XML readonly widget.
Refactored the validation process. REMOVED xml_field_field_validate in lieu of xml_field_element_validate for simplicity. Added several tests to support the UI validation. Bugfix that was not allowing youtube validator to work in some cases.
A few more bug fixes, plus enhanced documentation.
Issue 1950256: Facet UI Error: The widget does not support the sarnia_term query type
Issue 2514798: Turn on the minimum facet count setting
Issue 1779762: Issue with sarnia_entity_type not yet available in hook_entity_info
Issue 2496765: Update README.txt