Investigate webpack vs. gulp for build process

[sfount]

Webpack is designed to bundle many resources into single static files that can be used by a web application. This is currently what our gulp build process does.

Webpack may provide some benefits over our current gulp implementation that should be investigated:

• Simple configuration file - much easier to read and write additional dependencies
• Much less code written by developers
• Proven on hundreds of projects vs. unique gulp build process

Some things to watch out for:

• Very opinionated build process
• Should be verified to support all of the current functionality written by the team in gulp

Useful comparison between various tools

[jniles]

From what I've seen of webpack, it is designed for live reloading and other interesting functions that bhima hasn't supported in its build yet. We should add these but it may be a longer migration process to get to a place where webpack is actually helpful to us.