Add logo.svg and render it as default logo

The previous default rendering was broken because it was not escaping
the svg correctly so the svg is now wrapped in encodeURIComponent.

src/images/icons/logo.svg

+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg width="24px" height="28px" viewBox="0 0 24 28" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <rect fill="#ffffff" stroke="none" width="17.14407" height="16.046612" x="3.8855932" y="3.9449153" />
+    <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <path d="M0,2.00494659 C0,0.897645164 0.897026226,0 2.00494659,0 L21.9950534,0 C23.1023548,0 24,0.897026226 24,2.00494659 L24,21.9950534 C24,23.1023548 23.1029738,24 21.9950534,24 L2.00494659,24 C0.897645164,24 0,23.1029738 0,21.9950534 L0,2.00494659 Z M9,24 L12,28 L15,24 L9,24 Z M7.00811294,4 L4,4 L4,20 L7.00811294,20 L7.00811294,15.0028975 C7.00811294,12.004636 8.16824717,12.0097227 9,12 C10,12.0072451 11.0189302,12.0606714 11.0189302,14.003477 L11.0189302,20 L14.0270431,20 L14.0270431,13.1087862 C14.0270433,10 12,9.00309038 10,9.00309064 C8.01081726,9.00309091 8,9.00309086 7.00811294,11.0019317 L7.00811294,4 Z M19,19.9869002 C20.1045695,19.9869002 21,19.0944022 21,17.9934501 C21,16.892498 20.1045695,16 19,16 C17.8954305,16 17,16.892498 17,17.9934501 C17,19.0944022 17.8954305,19.9869002 19,19.9869002 Z" id="Rectangle-2-Copy-17" fill="currentColor"></path>
+    </g>
+</svg>

src/sidebar/services/groups.js

@@ -9,7 +9,8 @@ const DEFAULT_ORG_ID = '__default__';
 const DEFAULT_ORGANIZATION = {
   id: DEFAULT_ORG_ID,
   logo:
-    'data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" class="svg-icon masthead-logo" height="28" viewBox="0 0 24 28" width="24"><path d="M3.886 3.945H21.03v16.047H3.886z" fill="#fff" /><path d="M0 2.005C0 .898.897 0 2.005 0h19.99C23.102 0 24 .897 24 2.005v19.99A2.005 2.005 0 0 1 21.995 24H2.005A2.005 2.005 0 0 1 0 21.995V2.005zM9 24l3 4 3-4H9zM7.008 4H4v16h3.008v-4.997C7.008 12.005 8.168 12.01 9 12c1 .007 2.019.06 2.019 2.003V20h3.008v-6.891C14.027 10 12 9.003 10 9.003c-1.99 0-2 0-2.992 1.999V4zM19 19.987c1.105 0 2-.893 2-1.994A1.997 1.997 0 0 0 19 16c-1.105 0-2 .892-2 1.993s.895 1.994 2 1.994z" fill="currentColor" fill-rule="evenodd" /></svg>',
+    'data:image/svg+xml;utf8,' +
+    encodeURIComponent(require('../../images/icons/logo.svg')),
 };
 
 const events = require('../events');