Added Redux DevTools Extension

[jdnordy]

PROBLEM

Currently, the application is only using redux-logger in development to track state changes for debugging purposes.

SOLUTION

Added dependency redux-devtools-extension which enables the use of a GUI when working with redux in development.

TRADE-OFFS

Redux devtools extension does require a browser extension to be installed in order to use, so it's not as light weight as redux-logger. But, the GUI is much nicer and easier to work with. One of my favorite features is the timeline where you can go back to previous views by reverting state changes. **suggestion: to include and suggest the browser redux devtool extension download. Yet still leave in redux-logger. This way, the dev can choose what debugger tool that want to work with.