Various changes and improvements.

Added warning message when console is opened, this is in preparation for alpha.
Added a new background image. Restored random backgrounds on launch (for now).
Changed the overlay dismiss/cancel buttons from anchors to buttons.

app/assets/js/scripts/overlay.js

@@ -2,6 +2,8 @@
  * Script for overlay.ejs
  */
 
+//document.getElementById('overlayDismiss').href = 'javascript:void(0);'
+
 /* Overlay Wrapper Functions */
 
 /**