Ran `make lint` and fixed the issues it complained about.

web/viewer.js

@@ -575,16 +575,23 @@ var PDFView = {
   },
 
   pinSidebar: function pdfViewPinSidebar() {
-  
+    var sidebar = document.getElementById('sidebar');
-    var sidebar = document.getElementById("sidebar");
+    var pinIcon = document.getElementById('pinIcon');
-    var pinIcon = document.getElementById("pinIcon");
+
-
+    sidebar.className = sidebar.className.replace(
-    sidebar.className = sidebar.className.replace( /(?:^|\s)released(?!\S)/ , '' );
+                          /(?:^|\s)released(?!\S)/ ,
-    sidebar.className = sidebar.className.replace( /(?:^|\s)pinned(?!\S)/ , '' );
+                          '');
-    pinIcon.className = pinIcon.className.replace( /(?:^|\s)released(?!\S)/ , '' );
+    sidebar.className = sidebar.className.replace(
-    pinIcon.className = pinIcon.className.replace( /(?:^|\s)pinned(?!\S)/ , '' );
+                          /(?:^|\s)pinned(?!\S)/ ,
-    
+                          '');
-    var newClass = this.pinState ? " pinned" : " released";
+    pinIcon.className = pinIcon.className.replace(
+                          /(?:^|\s)released(?!\S)/ ,
+                          '');
+    pinIcon.className = pinIcon.className.replace(
+                          /(?:^|\s)pinned(?!\S)/ ,
+                          '');
+
+    var newClass = this.pinState ? ' pinned' : ' released';
 
     sidebar.className += newClass;
     pinIcon.className += newClass;