Add front-end dependencies section in documentation (fixes #11795) (#11827)
Add front-end dependencies section in documentation (fixes #11795) (#11827)

* added dependencies to docs

* review updates
alexgibson/bedrock,craigcook/bedrock,pascalchevrel/bedrock,mozilla/bedrock,craigcook/bedrock,alexgibson/bedrock,craigcook/bedrock,mozilla/bedrock,craigcook/bedrock,alexgibson/bedrock,pascalchevrel/bedrock,pascalchevrel/bedrock,pascalchevrel/bedrock,mozilla/bedrock,alexgibson/bedrock,mozilla/bedrock