Fix up icons

src/assets/stylesheets/presence-list.scss

@@ -52,17 +52,14 @@
 :local(.device) {
   width: 32px;
   height: 32px;
-  background-color: black;
-  border-radius: 16px;
   position: relative;
   margin: 0px 12px 0px 0px;
 
   img {
     position: absolute;
-    top: 2px;
     left: 2px;
-    width: 28px;
-    height: 28px;
+    width: 32px;
+    height: 32px;
   }
 }
 

src/react-components/presence-list.js

@@ -2,9 +2,9 @@ import React, { Component } from "react";
 import PropTypes from "prop-types";
 import styles from "../assets/stylesheets/presence-list.scss";
 import classNames from "classnames";
-import PhoneImage from "../assets/images/mobile_screen_entry.svg";
-import DesktopImage from "../assets/images/desktop_screen_entry.svg";
-import HMDImage from "../assets/images/generic_vr_entry.svg";
+import PhoneImage from "../assets/images/presence_phone.png";
+import DesktopImage from "../assets/images/presence_desktop.png";
+import HMDImage from "../assets/images/presence_vr.png";
 import { FormattedMessage } from "react-intl";
 
 export default class PresenceList extends Component {