Fix grunt images handling.
Make 'grunt serve:dist' load app from 'dist' but with dev config and add 'serve:prod' target to load with prod config.
Merge pull request #51 from hbj/feature/grunt-fixes

Fix grunt images handling and 'serve:dist' target.
Configure app to show preloaded on view change and an error message on view change error.
Use route resolver for main view.
Use route resolver for CCU breakdown view.
Use route resolver for facilities view.
Use route resolver for inventory view.
Use route resolver for ledger view.
Use route resolver for stock count view.
Use route resolver for stock count summary view.
Use route resolver for stock out view.
Code enhancements.
Use route resolver for waste count view.