Various changes and improvements.

Added warning message when console is opened, this is in preparation for alpha.
Added a new background image. Restored random backgrounds on launch (for now).
Changed the overlay dismiss/cancel buttons from anchors to buttons.

app/assets/js/scripts/uicore.js

@@ -14,6 +14,13 @@ window.eval = global.eval = function () {
     throw new Error('Sorry, this app does not support window.eval().')
 }
 
+// Display warning when devtools window is opened.
+remote.getCurrentWebContents().on('devtools-opened', () => {
+    console.log('%cThe console is dark and full of terrors.', 'color: white; -webkit-text-stroke: 4px #a02d2a; font-size: 60px; font-weight: bold')
+    console.log('%cIf you\'ve been told to paste something here, you\'re being scammed.', 'font-size: 16px')
+    console.log('%cUnless you know exactly what you\'re doing, close this window.', 'font-size: 16px')
+})
+
 // Disable zoom, needed for darwin.
 webFrame.setZoomLevel(0)
 webFrame.setVisualZoomLevelLimits(1, 1)