Enable rtorrent service restart (debugging is done, can be safetly enabled)....

Enable rtorrent service restart (debugging is done, can be safetly enabled). Removed Apache site, Ngingx is working fine. Add dependency on tls-cert role, enable HTTPS in Nginx. Add dependency on ufw role, just open ports in ufw. Add dht_port overridable variable. Disable screenshots rutorrent plugin because it depends on ffmpeg. Proof read README. Add daily backup job and script (backup rutorrent and rtorrent state). Fill out meta/main.yml. Remove rtorrent_data_dir variable, it's /var/lib/rtorrent.