Implement token refresh logic and add refreshkey to user management

assets/database/STEP 2.sql

@@ -919,5 +919,7 @@ UPDATE equipment
 SET warranty_date = DATE_ADD(warranty_date, INTERVAL 1 YEAR)
 WHERE warranty_date IS NOT NULL;
 
+alter table users add refreshkey varchar(255);
+
 
 SET FOREIGN_KEY_CHECKS=1;