Patching minor XSS vulnerability

The update output shows the name of the current commit your local installation is on. So if a commit is named <script>alert("xss");</script>, for example, that code will execute when someone updates their installation.

Not a huge deal since we'd notice if someone made a rogue pull request with any commit names like that before ever accepting it into the repo.

homepage/views.php

@@ -353,7 +353,7 @@ function copyOutput(elem) {
         $output = implode("\n", $lines);
         $results = $output;
 
-
+        $results = nl2br(htmlspecialchars($results));
         if(strlen($results) == 0) {
           $results = "This command has no output.";
         }