Sonar hasn't been updated in quite some time, and several of our dependencies (both direct and indirect) have known security issues. This change starts the process of modernizing. Some of these are related to build: gulp, babel, and webpack (and associated plugins). These are all now running on the latest releases. We're still using the legacy mode for JS decorators, but otherwise everything is up to date. For some reason, the update to webpack broke the gzip step for bundle.js. I've changed things over to use brotli for compression and the newish `express-static-gzip` to serve it, which gets us even better file size savings. The rest of the dep changes are more runtime oriented. The biggest change is the switch from the old `apollo-boost` package to the new `@apollo/client`. As part of this, we're now on the newest versions of `graphql` and `graphql-tools`. Testing Done: Verified that I could log in, navigate around, and edit data.