Some styling clean-up and fixed legend markers so that if the end of the marker is beyond the width of the page it will start a new row.

Update to use d3-redux library which no longer stores the store on the d3 node. Instead the store is provided explictly when needed to dispatch actions or when selectors are used.

Revert "Revert "Initial attempt to get zoom/brush graph on screen. There are layout and scaling issues but it does appear.""

This reverts commit c41f543e.

Revert "Initial attempt to get zoom/brush graph on screen. There are layout and scaling issues but it does appear."

This reverts commit 9ad5ca0b.

Initial attempt to get zoom/brush graph on screen. There are layout and scaling issues but it does appear.

Use core-js for polyfills, adding those that make us compatible with IE11 with the exception of Intl time zone handling.

Remove usage of Set class in favor of D3 version. Fixes issues with spread operator and removes need for polyfill.