Add link to sharing to bring directly to personal statistics page (#727)

* Add link to sharing to bring directly to personal statistics page, with
token

* remove general statistics url in favor of user statistics

this put their token into a session on the statistic server, so that any
page that can make use of it ( full list / sigmoid list ) will show their
entry, but the long term goal for that landing page is to be able to
allow users to view settings ( ie. to print / save ), and eventually,
provide a more complete settings editor then nightscout provided ...

FreeAPS/Sources/Modules/Sharing/View/SharingRootView.swift

@@ -81,8 +81,13 @@ extension Sharing {
 
                 Section {}
                 footer: {
-                    Text("https://open-iaps.app/statistics")
-                        .frame(maxWidth: .infinity, alignment: .center)
+                    let statisticsLink = URL(string: "https://open-iaps.app/user/" + state.identfier)!
+
+                    Button("View Personal Statistics") {
+                        UIApplication.shared.open(statisticsLink, options: [:], completionHandler: nil)
+                    }
+                    .frame(maxWidth: .infinity, alignment: .center)
+                    .font(.system(size: 15))
                 }
             }
             .dynamicTypeSize(...DynamicTypeSize.xxLarge)