Replace Bower with npm or other tools

[dongbohu]

Bower is going to be deprecated. bower install gives the following message:

npm WARN deprecated [email protected]: We don't recommend using Bower for new projects. 
Please consider Yarn and Webpack or Parcel. You can read how to migrate legacy project here:
https://bower.io/blog/2017/how-to-migrate-away-from-bower/
/usr/local/bin/bower -> /usr/local/lib/node_modules/bower/bin/bower

[dongbohu]

It is probably a good idea to update angularjs-related packages too. This project is still using Angular.js 1.2.x, we should update them to at least 1.4.14. (The latest version as of today seems to be 1.7.5.)

See this link on Angular.js migration: https://docs.angularjs.org/guide/migration

[dongbohu]

A few interesting articles on bower migration:

• bower to npm/yarn/webpack:
  https://medium.com/netscape/bye-bye-bower-or-how-to-migrate-from-bower-to-npm-and-webpack-4eb2e1121a50

• angularjs 1.5 and webpack: https://medium.com/@narthur157/how-to-modernized-angularjs-1-5-with-es6-webpack-mocha-sass-and-components-1babb45a0381

• angularjs and gulp: https://blog.angular-university.io/what-every-angular-project-likely-needs-and-a-gulp-build-to-provide-it/