Added PDF link at top banner

(cherry picked from commit 655f9051fcb144c29ebf0e993047dc3010547948)

akka-docs/_sphinx/themes/akka/layout.html

@@ -43,6 +43,7 @@
        <h1 class="heading"><a href="{{ pathto('index') }}">
          <span>{{ shorttitle|e }}</span></a></h1>
        <h2 class="heading"><span>Version {{ version|e }}</span></h2>
+       <h2 class="rightheading"><span><a href="http://akka.io/docs/akka/{{ version|e }}/akka.pdf">PDF</a></span></h2>
         {%- endif %}
         {%- endblock %}
       </div>

akka-docs/_sphinx/themes/akka/static/akka.css_t

@@ -126,6 +126,12 @@ div.header img.rightlogo {
     float: right;
 }
 
+div.header h2.rightheading {
+    position: relative;
+    top:-45px;
+    float: right;
+}
+
 
 div.title {
     font-size: 1.3em;