Cleanup manifest and app icons

client/manifest.json

@@ -2,24 +2,13 @@
     "name": "Snapdrop",
     "short_name": "Snapdrop",
     "icons": [{
-        "src": "images/favicon-96x96.png",
-        "sizes": "96x96",
-        "type": "image/png"
-    },{
-        "src": "images/apple-touch-icon.png",
-        "sizes": "152x152",
-        "type": "image/png"
-    },{
-        "src": "images/mstile-150x150.png",
-        "sizes": "144x144",
-        "type": "image/png"
-    },{
         "src": "images/android-chrome-192x192.png",
         "sizes": "192x192",
-        "type": "image/png"
+        "type": "image/png",
+        "purpose": "any maskable"
     },{
-        "src": "images/logo_transparent_512x512.png",
-        "sizes": "512x512",
+        "src": "images/favicon-96x96.png",
+        "sizes": "96x96",
         "type": "image/png"
     }],
     "background_color": "#efefef",
@@ -27,6 +16,7 @@
     "display": "minimal-ui",
     "theme_color": "#3367d6",
     "share_target": {
+        "method":"GET",
         "action": "/?share_target",
         "params": {
             "title": "title",