Fix class and element names

src/elements/emby-button/emby-button.js

@@ -11,7 +11,7 @@ class EmbyButton extends HTMLButtonElement {
             return;
         }
 
-        this.classList.add('../../elements/emby-button/emby-button');
+        this.classList.add('emby-button');
         // TODO replace all instances of element-showfocus with this method
         if (layoutManager.tv) {
             // handles all special css for tv layout

src/elements/emby-button/paper-icon-button-light.js

@@ -5,14 +5,14 @@ import 'webcomponents.js/webcomponents-lite';
 const EmbyButtonPrototype = Object.create(HTMLButtonElement.prototype);
 
 EmbyButtonPrototype.createdCallback = function () {
-    this.classList.add('../../elements/emby-button/paper-icon-button-light');
+    this.classList.add('paper-icon-button-light');
 
     if (layoutManager.tv) {
         this.classList.add('show-focus');
     }
 };
 
-document.registerElement('../../elements/emby-button/paper-icon-button-light', {
+document.registerElement('paper-icon-button-light', {
     prototype: EmbyButtonPrototype,
     extends: 'button'
 });