Fix two Quick Send bugs

www/assets/js/quicksend.js

@@ -7,7 +7,7 @@
 
 function showAddressQRCode() {
     var content = "QSv1|tofrom"
-            + "|" + inStorage("accountnumber") ? getStorage("accountnumber") : ""
+            + "|" + (inStorage("accountnumber") ? getStorage("accountnumber") : "")
             + "|" + $("#addresscodeform #to_name").val()
             + "|" + $("#addresscodeform #to_company").val()
             + "|" + $("#addresscodeform #to_street1").val()

www/pages/quicksend.html

@@ -23,7 +23,7 @@
             <div class="col-100 medium-90 margin-horizontal">
                 <div class="card margin">
                     <div class="card-content text-align-center padding">
-                        For faster service, fill in this form and press Show Barcode. We'll just scan your phone screen instead of typing everything in by hand.
+                        For faster service, fill in this form and press Show Barcode, then scan the barcode that appears.
                         <br>
                         All fields are optional, but fill in as much as possible.
                     </div>
@@ -446,8 +446,9 @@
 
     <div class="popup" id="qrCodePopup">
         <div class="block text-align-center">
-            <img id="addresscode-barcode" style="max-width: 90%;" />
-            <p>Present this code for scanning.</p>
+            <span style="padding: 20px; background-color: white; display: inline-block;">
+                <img id="addresscode-barcode" style="max-width: 90%;" />
+            </span>
             <p><a class="button popup-close" href="#">Close</a></p>
         </div>
     </div>