themes/base: xhr.js: clean code style, implement XHR.get() and XHR.poll() convenience functions
themes/base: xhr.js: clean code style, implement XHR.get() and XHR.poll() convenience functions


deepak78/luci,deepak78/luci,deepak78/luci,deepak78/luci,deepak78/luci,8devices/luci,8devices/luci,deepak78/luci,8devices/luci,deepak78/luci,8devices/luci,8devices/luci,deepak78/luci,8devices/luci