fixes

bower.json

@@ -17,7 +17,7 @@
     "tests"
   ],
   "dependencies": {
-    "angular": "~1.3.15",
+    "angular": "~1.6.9",
     "bootstrap": "~3.3.4",
     "jquery": "~2.1.3",
     "angular-route": "~1.3.15",

js/ExtensionStorage.js

@@ -1,22 +1,25 @@
 function ExtensionStorage() {
+    function errorCB(callback) {
+        return callback();
+    }
     this.getLocal = function (key, callback) {
-        browser.storage.local.get(key).then(callback)
+        browser.storage.local.get(key).then(callback, errorCB.bind(this, callback))
     };
     this.setLocal = function (data, callback) {
-        browser.storage.local.set(data).then(callback)
+        browser.storage.local.set(data).then(callback, errorCB.bind(this, callback))
     };
     this.getSync = function (key, callback) {
         if (browser.storage.sync) {
-            browser.storage.sync.get(key).then(callback)
+            browser.storage.sync.get(key).then(callback, errorCB.bind(this, callback))
         } else {
-            browser.storage.local.get(key).then(callback)
+            browser.storage.local.get(key).then(callback, errorCB.bind(this, callback))
         }
     };
     this.setSync = function (data, callback) {
         if (browser.storage.sync) {
-            browser.storage.sync.set(data).then(callback)
+            browser.storage.sync.set(data).then(callback, errorCB.bind(this, callback))
         } else {
-            browser.storage.local.set(data).then(callback)
+            browser.storage.local.set(data).then(callback, errorCB.bind(this, callback))
         }
     }
 }

js/blockchain.js

@@ -241,9 +241,11 @@ function saveBlockingReceipts() {
 }
 function getProtectedUsers(callback) {
     storage.getSync("protectedUsers",function(items) {
-        var users = items.protectedUsers;
-        if (typeof users === "undefined")
+        var users;
+        if (!items || !items.protectedUsers)
             users = {};
+        else
+            users = items.protectedUsers;
         callback(users);
     });
 }