Add index include fields column

[noteflakes]

We want to be able to create indexs that include other fields (namely for states_xxxx tables). So:

• Add index_include_fields column to pmts_table
• Add necessary code to pmts_insert_trigger function. It needs to handle both indexes with and without include fields
• Update production server:
  • Add index_include_fields column
  • Update pmts_insert_trigger function