Improve error message in public key verifier

src/js/controller/login/login-verify-public-key.js

@@ -13,6 +13,7 @@ var PublicKeyVerifierCtrl = function($scope, $location, $q, $timeout, $interval,
 
         return $q(function(resolve) {
             // updates the GUI
+            $scope.errMsg = undefined;
             resolve();
 
         }).then(function() {
@@ -29,7 +30,7 @@ var PublicKeyVerifierCtrl = function($scope, $location, $q, $timeout, $interval,
             return success();
 
         }).catch(function(error) {
-            $scope.errMsg = error.message; // display error
+            $scope.errMsg = error.message + ' Retrying in ' + RETRY_INTERVAL / 1000 + ' seconds...'; // display error
 
             scheduleVerification(); // schedule next verification attempt
         });

src/js/service/publickey-verifier.js

@@ -95,7 +95,7 @@ PublickeyVerifier.prototype.verify = function() {
 
             if (!verificationSuccessful) {
                 // nothing unexpected went wrong, but no public key could be verified
-                throw new Error('Could not verify public key');
+                throw new Error('Could not verify public key.');
             }
 
             resolve(); // we're done