Working on theme. Added power panel and background.

js/lightdm-uestibulum.js

@@ -0,0 +1,12 @@
+var powerOptionsEl = document.getElementById("power-options")
+var powerPanelClasses = document.getElementById("power-panel").classList;
+
+function showPowerOptions() {
+  powerPanelClasses.add('active');
+}
+
+function hidePowerOptions(e) {
+  console.log(e.target);
+  if (e.target != powerOptionsEl) return;
+  powerPanelClasses.remove('active');
+}