Changes to List global files

added the non-success response with the status 401

added the optional property linkToDocs to the response with the 500 status

the response property context/items/params became required for the status 500

the data/items/lastModified response's property pattern ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$ was added for the status 200

added the non-success response with the status 500

endpoint added