Release 0.6.0 post fixes (#290)

* some fixes on ml

* modify dockerfile

* adding Procfile

* Fix heroku deployment

* fixes

* fix docker compose

* change default port/host

* rollback readme

* add web page classification example

* add bin bash to fix gcloud deploy

* add cite

* remove task button

* disable serving local files by default

* add prediction score sampling

* some docs refinements

* fix anaconda compat & add docs

* fixed conll export

* audio overlay fix

* fix ui task deletion

* update js/css scripts

* small readme fixes

* rc0

* update conda installation readme

* change setup

Co-authored-by: nik <nik@heartex.net>