removed scripts for building openlayers
updated OpenLayers to newest stable release 2.12
updated OpenLayers CSS,
onImageLoadError has now the same bg-color as the other boxes on the page
pass custom restful url_templates to the demo service
fixed missing tile still displaying in chrome
Merge pull request #72 from quiqua/demo_with_openlayers_212

Update Demo with OpenLayers 2.12