Update footer

Remove duplicate code footer in all pages
Updated the link to the project on github

templates/thread.html

@@ -82,13 +82,8 @@
 
 	{{ config.ad.bottom }}
 
-	<footer>
-		<p class="unimportant" style="margin-top:20px;text-align:center;">- Tinyboard + 
-			<a href="https://engine.vichan.net/">vichan</a> {{ config.version }} -
-		<br>Tinyboard Copyright &copy; 2010-2014 Tinyboard Development Group    
-		<br><a href="https://engine.vichan.net/">vichan</a> Copyright &copy; 2012-2018 vichan-devel</p>
-		{% for footer in config.footer %}<p class="unimportant" style="text-align:center;">{{ footer }}</p>{% endfor %}
-	</footer>
+	{% include 'footer.html' %}
+	
 	<script type="text/javascript">{% verbatim %}
 		ready();
 	{% endverbatim %}</script>