CORE-5386 Added parameter display_order conversions.

Added a display_order column to parameters and parameter_groups, and added conversions to populate these fields.
CORE-5832 Updated App UI and App description endpoints to return parameters and groups in this order.
CORE-5386 Added DELETE CASCADE to App foreign keys.

Updated App-related tables to define their foreign keys with 'ON DELETE CASCADE'.
This required updating the file_parameters to have a foreign keys to the parameters table instead of the other way around.
Added conversions to ensure all file_parameters are referenced by a parameter and group.
CORE-5832 Updated job view, relabel, and pipeline edit endpoints with these changes.