CC-2950: Tell users if they are running an out-of-date version or not

- make latest version download link open in a new window
- show yellow upgrade icon when 2 verions back
- show red icon when more than 2 versions back

airtime_mvc/public/js/airtime/dashboard/versiontooltip.js

@@ -8,9 +8,9 @@ function getContent() {
     var msg = "";
     if(isUpToDate()) {
         msg = "You are running the latest version";
-    } else if(diff <= 2) {
+    } else if(diff == 1) {
         msg = "New version available: " + link;
-    } else if(diff == 3) {
+    } else if(diff == 2) {
         msg = "This version will soon be obsolete.<br/>Please upgrade to " + link;
     } else {
         msg = "This version is no longer supported.<br/>Please upgrade to " + link;
@@ -44,7 +44,7 @@ function getLatestVersion() {
  * Returns the download link to latest release in HTML
  */
 function getLatestLink() {
-    return "<a href='" + $("#version-link").html() + "'>" + getLatestVersion() + "</a>";
+    return "<a href='' onclick='openLatestLink();'>" + getLatestVersion() + "</a>";
 }
 
 /**
@@ -58,6 +58,13 @@ function isUpToDate() {
     return (diff == 0 && current == latest) || diff < 0;
 }
 
+/**
+ * Opens the link in a new window
+ */
+function openLatestLink() {
+    window.open($("#version-link").html());
+}
+
 /**
  * Sets up the tooltip for version notification
  */