update overview page copy
Make DVLA an abbreviation
Update copy on tax disc cust sat module
Update copy on SORN  cust sat module
Update application failures module copy
Ammend response time copy
Update failures copy
fix typo
Fix satisfaction typos
Make response time copy clearer
Improve failures info copy
Improve info text
Use request domain for calls to backdrop api
Update failures copy
fiddle with failures copy
Improve vehicle licensing description
Improve table headers
Improve errors copy
Minor changes with @NayeemaC
Update tests to match new copy