add lighttpd-mod-webdav_min package alternative to lighttpd-mod-webdav
lighttpd-mod-webdav_min is more minimal than full lighttpd-mod-webdav.
lighttpd-mod-webdav_min does not support PROPPATCH, LOCK, UNLOCK, and
by not supporting those methods, removes dependencies on libxml2,
libsqlite3, and libuuid.
Signed-off-by: Glenn Strauss <gstrauss@gluelogic.com>