- If the database contains has than 4 valid fields all fields from the 4th one
to the last one will be merged into the 4th one so we index all entry contents
- get_content_value now receives the whole data_content record as fields may need
other values than just the content to prepare the value
- phpunit database generator changes to separate checkboxes from radio buttons options
and to separate multimenu options from menu options
David Monllao