Update grey logo and use in empty Code and Slides

customize.dist/CryptPad_logo_grey.svg

@@ -1,13 +1,5 @@
 <svg width="280" height="349" version="1.1" viewBox="0 0 74.083 92.34" xmlns="http://www.w3.org/2000/svg" xmlns:osb="http://www.openswatchbook.org/uri/2009/osb">
  <g>
-  <g transform="translate(-640.42 -172.99)" style="fill:#ffffff">
-   <g style="fill:#ffffff">
-    <path d="m644.02 176.9h44.386l22.414 20.826v24.899c0 26.166-21.414 32.228-33.117 38.409-12.815-5.8945-32.794-12.329-33.117-38.409z" style="fill:#ffffff"/>
-   </g>
-   <g style="fill:#ffffff">
-    <path d="m644.02 176.9h44.386l22.414 20.826v24.899c0 26.166-21.414 32.228-33.117 38.409-12.815-5.8945-32.794-12.329-33.117-38.409z" style="fill:#ffffff"/>
-   </g>
-  </g>
   <g transform="translate(-125.38 -26.449)">
    <path d="m128.98 30.355 0.55499 39.644h33.141l4e-3 -39.644z" style="fill-opacity:.39608;fill:#949494"/>
    <path d="m162.69 70 3e-3 43.946c12.825-5.8796 32.762-17.077 33.127-43.157l0.0108-0.78911z" style="fill-opacity:.39608;fill:#949494"/>

www/code/inner.js

@@ -152,7 +152,7 @@ define([
         var $codeMirror = $('.CodeMirror');
 
         $('<img>', {
-            src: '/customize/CryptPad_logo.svg',
+            src: '/customize/CryptPad_logo_grey.svg',
             alt: '',
             class: 'cp-app-code-preview-empty'
         }).appendTo($previewContainer);

www/slide/slide.js

@@ -78,7 +78,7 @@ define([
 
         if (c === '') {
             var $empty = $('<img>', {
-                src: '/customize/CryptPad_logo.svg',
+                src: '/customize/CryptPad_logo_grey.svg',
                 alt: '',
                 class: 'cp-app-code-preview-empty'
             });