use logo in toolbar

customize.dist/src/less/toolbar.less

@@ -815,13 +815,16 @@ body .cryptpad-toolbar {
         }
         a.cryptpad-logo {
             cursor: pointer;
-            font-size: 1em;
-            height: auto;
-            padding: 0px 5px;
+            display: inline-flex;
             text-decoration: none;
+            height: auto;
+            padding: 10px;
 
-            // hack because of whiteboard and poll
-            color: white !important;
+            img {
+                cursor: pointer;
+                height: 100%;
+                width: 100%;
+            }
         }
     }
     .cryptpad-user {

www/common/toolbar2.js

@@ -625,8 +625,10 @@ define([
         var $aTag = $('<a>', {
             href: "/drive/",
             title: Messages.header_logoTitle,
-            'class': "cryptpad-logo fa fa-hdd-o"
-        });
+            'class': "cryptpad-logo"
+        }).append($('<img>', {
+            src: '/customize/images/logo_white.svg'
+        }));
         var onClick = function (e) {
             e.preventDefault();
             if (e.ctrlKey) {