text: Title: Better way to manage js/css dependencies
  Body: Seems quokka depends on lots of external js library, such as
  - bootstrap
  - lepture/editor
  - tinymce
  
  So I'm considering a better way to organize and manage the js dependencies. 
  
  These days I'm trying to learn something about nodejs, and some js dependency managment project such as https://github.com/component/component. 
  
  So if you think this is the right choice, I can provide some help. 
  