Merge remote branch 'upstream/master'

web/viewer.js

@@ -110,15 +110,15 @@ var PDFView = {
     var xhr = new XMLHttpRequest();
     xhr.open('GET', url);
     xhr.mozResponseType = xhr.responseType = 'arraybuffer';
-    xhr.expected = (document.URL.indexOf('file:') === 0) ? 0 : 200; 
+    xhr.expected = (document.URL.indexOf('file:') === 0) ? 0 : 200;
     xhr.onprogress = PDFView.progressLevel;
 
     xhr.onreadystatechange = function() {
       if (xhr.readyState === 4 && xhr.status === xhr.expected) {
         var data = (xhr.mozResponseArrayBuffer || xhr.mozResponse ||
                     xhr.responseArrayBuffer || xhr.response);
-        
-        document.getElementById('loading').style.display = "none";
+
+        document.getElementById('loading').style.display = 'none';
         PDFView.load(data, scale);
       }
     };