Add slashes to links in <head.html>, <nav.html>, <footer.html> and

<404.html>.

Add favicon example.

Modify footer vars to allow links not pointing to user profiles.

<header.html> renamed to <header_wp.html> and part of it moved to <header.html> since the same block was repeated two times.

Add Hugo version to footer

layouts/partials/header_wp.html

@@ -0,0 +1,22 @@
+<!-- TODO this file has become a mess, refactor it -->
+
+{{ if or .Params.bigimg .Title }}
+
+  {{ if .Params.bigimg }}
+    <div id="header-big-imgs" data-num-img=1 data-img-src-1="{{.Params.bigimg}}"></div>
+  {{ end }}
+
+  <header class="header-section {{ if .Params.bigimg }}has-img{{ end }}">
+  {{ if .Params.bigimg }}
+    <div class="big-img intro-header">
+      {{ partial "header.html" . }}
+      <span class='img-desc'></span>
+    </div>
+  {{ end }}
+  <div class="intro-header no-img">
+    {{ partial "header.html" . }}
+  </div>
+  </header>
+{{ else }}
+  <div class="intro-header"></div>
+{{ end }}