Fixed backup bugs with deleted pads.

static/cryptopad.html

@@ -187,7 +187,9 @@
 			}
 			
 			for (var pad in pads) {
+                if (pads[pad] != null) {
 				    addPadList(pads[pad]);
+                }
 			}
 			$("#searchtext").attr("data-source", JSON.stringify(pads));
 		}
@@ -219,20 +221,29 @@
             getKVSItem(hashTitle(pads[pad]), function(data) {
                 backup[pads[pad]] = sjcl.decrypt(key, data);
                 backupWaiting--;
+                doShowBackupDlg();
+            })
+        }
+
+        function doShowBackupDlg() {
             if (backupWaiting == 0) {
                 $("#backupDlg").modal();
                 $("#backupText").val(JSON.stringify(backup))
             }
-            })
         }
 
 		function doBackup() {
 			backup = new Object();
 			backupWaiting = pads.length;
-			for (var pad in pads) {
+			for (var pad = 0; pad < pads.length; pad++) {
+                if ((pads[pad] == null) || (typeof pads[pad] === 'undefined')) {
+                    backupWaiting--;
+                    doShowBackupDlg();
+                } else {
                     backupKVS(pad);
                 }
 			}
+		}
 		
 		function deleteNote() {
 			var index = $.inArray($("#title").val(), pads);