Update screenshots and icons for 2.8 (#230)

_layouts/default.html

@@ -7,22 +7,10 @@
     <link rel="canonical" href="https://sparkle-project.org{{ page.url  | replace: '/index.html' , '/' }}" />
     <title>{% if page.title %} {{ page.title }} - {% endif %} {{ site.title }}</title>
 
-    <link rel="apple-touch-icon" sizes="57x57" href="/apple-icon-57x57.png" />
-    <link rel="apple-touch-icon" sizes="60x60" href="/apple-icon-60x60.png" />
-    <link rel="apple-touch-icon" sizes="72x72" href="/apple-icon-72x72.png" />
-    <link rel="apple-touch-icon" sizes="76x76" href="/apple-icon-76x76.png" />
-    <link rel="apple-touch-icon" sizes="114x114" href="/apple-icon-114x114.png" />
-    <link rel="apple-touch-icon" sizes="120x120" href="/apple-icon-120x120.png" />
-    <link rel="apple-touch-icon" sizes="144x144" href="/apple-icon-144x144.png" />
-    <link rel="apple-touch-icon" sizes="152x152" href="/apple-icon-152x152.png" />
-    <link rel="apple-touch-icon" sizes="180x180" href="/apple-icon-180x180.png" />
-    <link rel="icon" type="image/png" sizes="192x192"  href="/android-icon-192x192.png" />
-    <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png" />
-    <link rel="icon" type="image/png" sizes="96x96" href="/favicon-96x96.png" />
-    <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png" />
-    <link rel="manifest" href="/manifest.json" />
+    <link rel="icon" type="image/png" sizes="40x40" href="/icon-20x20@2x.png" />
+    <link rel="icon" type="image/png" sizes="80x80" href="/icon-40x40@2x.png" />
+    <link rel="icon" type="image/png" sizes="167x167" href="/icon-83.3x83.5@2x.png" />
     <meta name="msapplication-TileColor" content="#0099f0" />
-    <meta name="msapplication-TileImage" content="/ms-icon-144x144.png" />
     <meta name="theme-color" content="#0099f0" />
 
     <link href="/css/main.css" media="screen" rel="stylesheet" type="text/css" />
@@ -63,7 +51,7 @@
             <span class="icon-bar"></span>
             <span class="icon-bar"></span>
           </button>
-          <a class="navbar-brand" href="/"><img src="/images/icon.png" srcset="/images/icon@2x.png" alt="" /> Sparkle</a>
+          <a class="navbar-brand" href="/"><img src="/images/icon@2x.png" alt="" /> Sparkle</a>
         </div>
         <div id="navbar" class="navbar-collapse collapse">
           <ul class="nav navbar-nav navbar-right">

index.html

@@ -5,7 +5,7 @@ navbar_extra_styles: navbar-home
 ---
 <div class="jumbotron sparkle-jumbotron">
   <div class="container">
-    <p><img src="/images/screenshot-noshadow.png" srcset="/images/screenshot-noshadow@2x.png" class="img screenshot" alt="Sparkle Test App Screenshot" /></p>
+    <p><img src="/images/screenshot-noshadow2.png" class="img screenshot" alt="Sparkle Test App Screenshot" /></p>
     <p class="tag-line">Sparkle is an easy-to-use software update framework for macOS applications.</p>
     <p>
       <a class="btn-download" href="//github.com/{{ site.github_username }}/Sparkle/releases/latest" role="button">Download latest</a>

manifest.json

@@ -1,41 +0,0 @@
-{
- "name": "App",
- "icons": [
-  {
-   "src": "\/android-icon-36x36.png",
-   "sizes": "36x36",
-   "type": "image\/png",
-   "density": "0.75"
-  },
-  {
-   "src": "\/android-icon-48x48.png",
-   "sizes": "48x48",
-   "type": "image\/png",
-   "density": "1.0"
-  },
-  {
-   "src": "\/android-icon-72x72.png",
-   "sizes": "72x72",
-   "type": "image\/png",
-   "density": "1.5"
-  },
-  {
-   "src": "\/android-icon-96x96.png",
-   "sizes": "96x96",
-   "type": "image\/png",
-   "density": "2.0"
-  },
-  {
-   "src": "\/android-icon-144x144.png",
-   "sizes": "144x144",
-   "type": "image\/png",
-   "density": "3.0"
-  },
-  {
-   "src": "\/android-icon-192x192.png",
-   "sizes": "192x192",
-   "type": "image\/png",
-   "density": "4.0"
-  }
- ]
-}