Another round of splash design

* Add map to splash
* Reverse venue<->conference relation
* Split venue address into fields
* Don't go through venue for lodgings anymore

app/views/layouts/application.html.haml

@@ -41,4 +41,5 @@
             You can run, copy, distribute, study, change and improve it.
             The source code and the developers are on
             =link_to "github.", "https://github.com/openSUSE/osem"
+    = content_for(:script_body)
     = piwik_tracking_tag