improve https support in godiva

add YUI related images to be served out locally - these were missed in #825

access background map layers via https for servers that support it.

Author: lesserwhirls

tds/src/main/webapp/godiva2/css/yui/container.css

@@ -52,7 +52,7 @@
         <div id="layerSelector" class="yui-skin-sam"></div>
 
         <div id="help" class="help">
-            <p><a href="http://www.unidata.ucar.edu/software/thredds/current/tds/reference/GodivaUsersGuide.html">User guide</a></p>
+            <p><a href="https://www.unidata.ucar.edu/software/thredds/current/tds/reference/GodivaUsersGuide.html">User guide</a></p>
         </div>
 
         <a href="http://www.met.reading.ac.uk/resc/home/" target="_blank"><img id="resclogo" src="img/new_logo_72dpi_web.png" alt="ReSC logo"></a>