v2.1.0

• Made the create_dhparams.sh script capable of creating missing directories.
  • Our small /docker-entrypoint.d/40-create-dhparam-folder.sh script is therefore no longer necessary.
• Made so that we run symlink_user_configs at startup so we do not run into a race condition with Nginx.
• Some minor cleanup in the Dockerfiles related to the above changes.