* add a switch to allow usage of specific ssl cert
* add documentation how to specify own certificates and what to do when running web behind an existing proxy
* add tweak to serve phoenix from /files
* auto enable oidc
* simplify setup by adding root directly to kweb
* add some descriptions for overriding kweb configuration
* add some configuration and clean up
* fixes for setup-tools.sh
fixes https://github.com/zokradonh/kopano-docker/issues/266
* add startup tests for meet demo
* add architecture to contributing file
* define ical_listen for kopano-ical
* precreate database if it does not yet exist
* fix spelling
* make it possible to redirect to another url, than /webapp
* add documentation
* define default value in container
* add value to .env through setup.sh
* tune .editorconfig for the existing files
* fix reported linting issues
* travis: switch language to node_js to be able to run npm
* travis: build on ubuntu bionic