Updated Gemfile and removd unecessary gems
Refactored styles
Added liquid include for displaying asset pipeline errors
Improvements to asset pipeline

* Improved asset caching. Destination files must exist to get a cache hit.
* Assets that encounter errors are not saved to the destination.
* Fixed pipeline to more cleverly handle extensions
* Aggregating all errors into an include file so thy can be visually displayed on the page (asset_pipeline_errors)
Added generator for asset error log include so it can be disabled or recreated