Improve template structure by introducing partials

Change-Id: I4a5dbdc8df8d779df0728fa4d36602fc4312b477
diff --git a/templates/partial/footer.html.ep b/templates/partial/footer.html.ep
new file mode 100644
index 0000000..8a93be4
--- /dev/null
+++ b/templates/partial/footer.html.ep
@@ -0,0 +1,4 @@
+<footer>
+  <a href="http://www1.ids-mannheim.de/kl/projekte/korap/"><%= loc 'about' %></a>
+  <%= doc_link_to 'V '. $Kalamar::VERSION, 'korap', 'kalamar' %>
+</footer>