Merge branch 'master' of github.com:al3x/sovereign

vars/defaults.yml

 webmail_db_username: "roundcube"
 # webmail_db_password: (required)
 webmail_db_database: "roundcube"
-carddav_version: "0.9.2"
+carddav_version: "1.0.0"
 
 # xmpp
 prosody_admin: "{{ admin_email }}"