Frontend: Fix fallback to default settings

Signed-off-by: Fred Boniface <fred@fjla.uk>

UpNext.md

@@ -14,6 +14,7 @@
         - Platform number
         - Operator
     - If only one callingPoint, a string is returned instead of an array.
+* Change dockerfile to deploy with brotli support for faster laoding.
 
 ### In Progress:
 

static/js/lib.main.js

@@ -7,6 +7,7 @@ async function storageAvailable(type) {  // Currently not used
         let x = '__storage_test__';
         storage.setItem(x, "test");
         storage.getItem(x);
+        storage.removeItem(x);
         log(`lib.main.storageAvailable: ${type} is available`, "INFO")
         return true;
     } catch (err) {
@@ -77,12 +78,17 @@ async function setLoadingDesc(desc) {
 
 /* Fetch User Settings */
 async function getQuickLinks() {
-    try {
-        var data = JSON.parse(localStorage.getItem("qlOpt"));
-    } catch (err) {
-        var data = 
+    var defaults =
                 ["bri","lwh","srd","mtp","rda","cfn",
                 "sml","shh","pri","avn","sar","svb"];
+    try {
+        if (localStorage.getItem("qlOpt")) {
+            var data = JSON.parse(localStorage.getItem("qlOpt"));
+        } else {
+            data = defaults;
+        }
+    } catch (err) {
+        data = defaults;
     }
     return data;
 }