Set app version, display version on app somewhere

[brendoncaulkins]

This will help let IT know when / if the app is updated what version is running, etc. Should help with clarity on deployments and changes in the future.

We should use the version in package.json, probably. There are NPM packages for retrieving that from the file, and ones that can be used to automate the versioning. Research time!

[brendoncaulkins]

https://semver.org/

[fsrodriguezm]

We could use grunt-bump to increment minor, major and patch versions.
https://github.com/vojtajina/grunt-bump