Serverside render footer

This way it's easy to add new links or a changed copyright to the footer
on all pages.

frontend/html/index.html

@@ -51,9 +51,9 @@
     </main>
     <footer>
         <ul>
-            <li><a href="https://github.com/Wolvan/poll.horse" target="_blank">Github Repo</a></li>
+            {{ FOOTER_LINKS }}
         </ul>
-        <div class="copyright">© 2021 Wolvan</div>
+        <div class="copyright">{{ FOOTER_COPYRIGHT }}</div>
     </footer>
 </body>
 </html>

src/frontend.ts

@@ -55,7 +55,11 @@ class MinificationTransform extends RenderTransform {
 
 const defaultReplacements = {
     "TITLE": "Poll Horse",
-    "DEVELOPER_CONTACT_INFO": "developer@poll.horse"
+    "DEVELOPER_CONTACT_INFO": "developer@poll.horse",
+    "FOOTER_COPYRIGHT": `© ${ (new Date()).getFullYear() } Wolvan`,
+    "FOOTER_LINKS": `
+        <li><a href="https://github.com/Wolvan/poll.horse" target="_blank">Github Repo</a></li>
+    `
 };
 class Defaults2RenderTransform extends MinificationTransform {
     constructor(replacements = {}) {