This is for a Web Interface used to administer OpenWrt. For running a WebServer see http.overview.
You can read about WebGUIs on http://lwn.net/Articles/420066/ from 2010-12-22
Mainly Lua (programming language)
will eventually replace luci
The X-Wrt feed has been removed from feeds.conf.default in r39457. Future snapshots will no longer include the broken webif packages.
server-side scripting that is necessary is done using haserl .