[React] Remove dependency on moment from components

[sawyerh]

Mayflower version: 10.0.0-alpha.2

We recently added the FooterSlim component to our application and noticed the bundle size increased about 100kb. This seems to mostly be due to the inclusion of moment as a dependency in this component, which comes with a large set of locale files:

It looks like the footer component uses moment as a way to reference the current year in the copyright text, in which case something like the following should work without requiring an external dependency:

new Date().getFullYear()

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getFullYear

[clairesunstudio]

ha, @smurrayatwork is on it already! thanks for flagging this and attaching the treemap!