Refactor download mechanism for font dependencies

[delucis]

install-dependencies.sh handles downloading font dependencies to the font/ directory using wget, and is executed immediately after npm install using the postinstall script hook.

With default options, if the connection hangs, wget only retries after 15 minutes, which can lead to needlessly slow builds.

Either refactor the wget command with shorter retry wait times specified (see StackExchange), or refactor entirely into Node world using download-cli.