DateTime.swift: use up to 60 days old SAGE values

SAge.swift: nowMinus60DaysTimeInterval

LoopFollow/Controllers/Nightscout/SAge.swift

@@ -10,7 +10,7 @@ import Foundation
 extension MainViewController {
     // NS Sage Web Call
     func webLoadNSSage() {
-        let lastDateString = dateTimeUtils.nowMinus10DaysTimeInterval()
+        let lastDateString = dateTimeUtils.nowMinus60DaysTimeInterval()
         let currentTimeString = dateTimeUtils.getCurrentDateTimeString()
         
         let parameters: [String: String] = [

LoopFollow/helpers/DateTime.swift

@@ -82,7 +82,7 @@ class dateTimeUtils {
         return nHoursAgoString
     }
     
-    static func nowMinus10DaysTimeInterval() -> String {
+    static func nowMinus60DaysTimeInterval() -> String {
         let today = Date()
         let oldDate = Calendar.current.date(byAdding: .day, value: -10, to: today)!
         let dateFormatter = DateFormatter()