* 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
* add multi-server attributes to ldif
* add example compose file for a multiserver
* add readme
* add script for database creation within the existing database instance
* add generation of admin.pem
* add own certificate for kopano_server_2
* add admin.pem to compose (only for multiserver)
* add spooler for 2nd node
* add link to ldap demo readme