* Updated dependencies
* Updated syntax to prevent deprecation warnings
* Update asset pipeline due to sassc switch
    * Move all partial scss files to subdirectories
    * Move all main scss files to main directory
    * Move all imported javascript files to subdirectories
    * Move all main javascript files to main directory
* Update root route to prevent root conflict (does not seem to give
issues)
* Migrate configs/environments/initializers to Rails 6