Fix for different webapp behaviour in dev env and production env

blur-admin - Failed to instiantiate module

Ok, so I faced the same error. The solution was quite simple (didn't require any code change):

rm -rf ./bower_components/
rm -rf ./release/
rm -rf ./node_modules/
rm -rf ./.tmp/*
gulp clean
npm install
bower install
npm rebuild node-sass
gulp build

After this, webapp behaves the same from `gulp serve`, `gulp serve:dist` and `gulp build`.