add predefined time frames for delete and expire (#765)

src/locales/en/messages.json

@@ -3443,10 +3443,10 @@
     "message": "Time required before automatically granting access."
   },
   "oneDay": {
-    "message": "1 Day"
+    "message": "1 day"
   },
   "days": {
-    "message": "$DAYS$ Days",
+    "message": "$DAYS$ days",
     "placeholders": {
       "days": {
         "content": "$1",
@@ -3559,5 +3559,8 @@
   },
   "disableRequireSsoError": {
     "message": "You must manually disable the Single Sign-On Authentication policy before this policy can be disabled."
+  },
+  "custom": {
+    "message": "Custom"
   }
 }