additional cleanup when destroying #1145

js/controllers/backgrounds.js

@@ -394,4 +394,10 @@ export default class Backgrounds {
 
 	}
 
+	destroy() {
+
+		this.element.remove();
+
+	}
+
 }

js/controllers/focus.js

@@ -79,6 +79,12 @@ export default class Focus {
 
 	}
 
+	destroy() {
+
+		this.Reveal.getRevealElement().classList.remove( 'focused' );
+
+	}
+
 	onRevealPointerDown( event ) {
 
 		this.focus();

js/controllers/notes.js

@@ -111,4 +111,10 @@ export default class Notes {
 
 	}
 
+	destroy() {
+
+		this.element.remove();
+
+	}
+
 }

js/controllers/progress.js

@@ -101,5 +101,10 @@ export default class Progress {
 
 	}
 
+	destroy() {
+
+		this.element.remove();
+
+	}
 
 }

js/controllers/slidenumber.js

@@ -123,4 +123,10 @@ export default class SlideNumber {
 
 	}
 
+	destroy() {
+
+		this.element.remove();
+
+	}
+
 }