Code:

• remove possibility to configure RepoItems in components
• only allow single VHost default-virtual-host without ability to set any of it's options.

Documentation:

• create documentation explaining how to add/remove/update RepoItems (vhosts, external component) using both webui and xmpp
• adjust existing documents that explain to configure --external or particular VHost settings via configuration file with information that this should be done via xmpp/webUI and which options to set.