Added function to update updated_date columns. Added triggers on tables to call function update_updated_date(). Added default values for data source types, indicator types, parameter  types.
Added function to update updated_date columns.
Added triggers on tables to call function update_updated_date().
Added default values for data source types, indicator types, parameter 
types.

alexisrolland/data-quality,alexisrolland/data-quality,alexisrolland/data-quality,alexisrolland/data-quality