Add mod_proxy: set lighttpd to reverse-proxy

Fix the cross-site HTTP Request Problem when not using lighttpd as reverse-proxy
Revert fastcgi configure
mod_proxy conf fix: fix wrong filename

fix wrong filename: fastcgi.conf -> proxy.conf
Merge pull request #1 from leiqzhang/dev.litevirt

Add mod_proxy: set lighttpd to reverse-proxy & Revert FastCGI Configuration