Cleanup package manifest

[campb303]

The package manifest currently lists dependencies that are no longer used and separates items into different install groups like general and dev. This should be cleaned up at the end of #191 .

[campb303]

Working on this.

[campb303]

NPM manages packages with two files:

• package.json which lists production and development dependencies as well as their version constraints.
• package-lock which lists example versions of dependencies for reproducible installations.

I've removed the unnecessary dependencies from the package.json file and regenerated the package-lock.json file. Both are soon to be made available in a PR.

[campb303]

Changes were made directly to staging. Closing.