#33 Add an `npm run clean-build` action to ensure fresh build of the application

Originally at 2015-01-13T14:15:26Z by Sebastian Sastre Too often while developing there is the need to reassure that the version of all the dependencies is correctly installed and the last version of the code is correctly compiled and loadable. A script like `npm run clean-build` could automate the following sequence: `rm -rf bower_components` `rm -rf node_modules` `rm -f src/*.js` `rm -f the.js` `rm -f config.js` `bower install` `npm install` `amber config` `grunt devel` `grunt`

Fixed by https://lolg.it/amber/amber/commit/19cc6c4b6dd42b03fe794897135d64f54c174cee. Closing.