Add package manager

[ArcaneDots]

This project is starting to collect a number of third-party and custom dependencies. Many of them are old and out of date. I just ran into a conflict between Bootstrap and JQuery while trying to fix issue #106. Translations stopped working since there was a conflict with i18next and a new version of JQuery. My plan is to simplify the process using one of the popular package managers.

Thinking Yarn but open to NPM or something else well supported.

[iandees]

I don't know a ton about JS package managers, but if we can get away with plain 'ol npm that might be easier?

[ArcaneDots]

Just did some research on the ones available. For their differences, NPM should work fine for our purposes.

[ahangarha]

Any progress on this?