Check for Tautulli footer in newsletters

data/interfaces/newsletters/recently_added.html

@@ -955,7 +955,7 @@
                         <td class="footer" style="font-family: 'Open Sans', Helvetica, Arial, sans-serif;font-size: 12px;vertical-align: top;clear: both;margin-top: 10px;text-align: center;width: 100%;">
                             <div class="footer-bar" style="margin-left: auto;margin-right: auto;width: 200px;border-top: 1px solid #E5A00D;margin-top: 25px;"></div>
                             <div class="content-block powered-by" style="padding-bottom: 10px;padding-top: 10px;">
-                                Newsletter generated by <a href="https://tautulli.com" target="_blank" style="text-decoration: underline;color: #fff;font-size: 12px;text-align: center;">Tautulli</a>.
+                                <!-- FOOTER MESSAGE - DO NOT REMOVE -->
                             </div>
                         </td>
                     </tr>

data/interfaces/newsletters/recently_added.internal.html

@@ -956,7 +956,7 @@
                         <td class="footer">
                             <div class="footer-bar"></div>
                             <div class="content-block powered-by">
-                                Newsletter generated by <a href="https://tautulli.com" target="_blank">Tautulli</a>.
+                                <!-- FOOTER MESSAGE - DO NOT REMOVE -->
                             </div>
                         </td>
                     </tr>