Merge branch 'licence' into 'master'

Use CC logo directly from statics and reposition licence

See merge request !7

layouts/partials/menu-footer.html

-<div style="position: absolute; bottom: 50px">
-  <a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-nc-sa/4.0/80x15.png" /></a>
-</div>
+  <a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/4.0/"><img alt="Creative Commons License" src="/images/cc-licence.png" /></a>

static/css/theme-mine.css

@@ -156,3 +156,8 @@ a:hover {
 #body .tags a.tag-link:hover::before {
   border-color: transparent var(--MAIN-LINK-HOVER-color) transparent transparent;
 }
+
+#footer {
+  position: absolute;
+  bottom: 0;
+}