remove old source CSS file
repo cleanup

delete unnecessary dot-files and
add production js and css files for distribution
Merge branch '2.1.x' of github.com:podlove/podlove-web-player into 2.1.x
further restructuring and cleanup

Move or remove the last unnecessary files from project root.
Rename podlove-webplayer-moderator.js to podlove-web-moderator.js.
update Makefile to new build process
working web player production file
version bump

package.json and css