Improved webpack configuration, always build our own React but provide the correct flags to strip debugging info

Use my fork of HtmlWebpackPlugin until they accept my patch. Add comment regarding '?[chunkhash]' behavior.

Add example unit tests for controller, directive, filters, serivces, as well as an e2e protractor test. Move 'test' directory up one directory

Lock package.json versions down to specific version until we figure out which newer versions are causing problems

Integrate eslint with webpack. Adds a couple seconds to initial build, but negligible time to incremental (watch) builds