Remove donation options, add support info.

docs/_templates/donate.html

@@ -1,12 +1,4 @@
-<h3>Donate</h3>
-<p>Help support further improvements and development, via:
-    <ul>
-        <li>
-            - <a href="https://www.paypal.me/RobertoRosario">PayPal.Me</a>
-        </li>
-        <li>- or Gumroad:
-            <script type="text/javascript" src="https://gumroad.com/js/gumroad.js"></script>
-            <a href="https://gumroad.com/l/UNApl" class="gumroad-button">Buy Mayan EDMS</a>
-        </li>
-    </ul>
+<h3>Support</h3>
+<p>
+    Consulting, support, customization, rebranding, and plug-in development are available. Email for information to: <a href='mailto:info@mayan-edms.com'>info@mayan-edms.com</a>
 </p>