Install Wekan to mobile homescreen icon and use fullscreen PWA.

Docs at https://github.com/wekan/wekan/wiki/PWA

Thanks to xet7 !

Closes #2879

client/00-startup.js

@@ -0,0 +1,6 @@
+// PWA
+if ('serviceWorker' in navigator) {
+  window.addEventListener('load', function() {
+    navigator.serviceWorker.register('/pwa-service-worker.js');
+  });
+}

client/components/main/layouts.jade

@@ -6,10 +6,16 @@ head
     where the application is deployed with a path prefix, but it seems to be
     difficult to do that cleanly with Blaze -- at least without adding extra
     packages.
-  link(rel="shortcut icon" href="/wekan-favicon.png")
-  link(rel="apple-touch-icon" href="/wekan-favicon.png")
-  link(rel="mask-icon" href="/wekan-logo-150.svg")
-  link(rel="manifest" href="/wekan-manifest.json")
+  link(rel="shortcut icon" type="image/x-icon" href="/favicon.ico")
+  link(rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png")
+  link(rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png")
+  link(rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png")
+  link(rel="manifest" href="/site.webmanifest")
+  link(rel="mask-icon" href="/safari-pinned-tab.svg" color="#5bbad5")
+  meta(name="apple-mobile-web-app-title" content="Wekan")
+  meta(name="application-name" content="Wekan")
+  meta(name="msapplication-TileColor" content="#00aba9")
+  meta(name="theme-color" content="#ffffff")
 
 template(name="userFormsLayout")
   section.auth-layout

public/browserconfig.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<browserconfig>
+    <msapplication>
+        <tile>
+            <square150x150logo src="/mstile-150x150.png"/>
+            <TileColor>#2d89ef</TileColor>
+        </tile>
+    </msapplication>
+</browserconfig>

public/html_code.html

@@ -0,0 +1,9 @@
+<link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png">
+<link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png">
+<link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png">
+<link rel="manifest" href="/site.webmanifest">
+<link rel="mask-icon" href="/safari-pinned-tab.svg" color="#5bbad5">
+<meta name="apple-mobile-web-app-title" content="Wekan">
+<meta name="application-name" content="Wekan">
+<meta name="msapplication-TileColor" content="#2d89ef">
+<meta name="theme-color" content="#ffffff">

public/pwa-service-worker.js

@@ -0,0 +1,4 @@
+self.addEventListener('install', function(event) {
+  // Dummy service worker that does nothing,
+  // for mobile browsers "Add to home screen".
+});

public/safari-pinned-tab.svg

@@ -0,0 +1,51 @@
+<?xml version="1.0" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
+ "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
+<svg version="1.0" xmlns="http://www.w3.org/2000/svg"
+ width="700.000000pt" height="700.000000pt" viewBox="0 0 700.000000 700.000000"
+ preserveAspectRatio="xMidYMid meet">
+<metadata>
+Created by potrace 1.11, written by Peter Selinger 2001-2013
+</metadata>
+<g transform="translate(0.000000,700.000000) scale(0.100000,-0.100000)"
+fill="#000000" stroke="none">
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+</g>
+</svg>

public/site.webmanifest

@@ -0,0 +1,20 @@
+{
+    "name": "Wekan",
+    "short_name": "Wekan",
+    "icons": [
+        {
+            "src": "/android-chrome-192x192.png",
+            "sizes": "192x192",
+            "type": "image/png"
+        },
+        {
+            "src": "/android-chrome-512x512.png",
+            "sizes": "512x512",
+            "type": "image/png"
+        }
+    ],
+    "theme_color": "#ffffff",
+    "background_color": "#ffffff",
+    "start_url": "/sign-in",
+    "display": "standalone"
+}

public/svg-etc/manifest.json

@@ -0,0 +1,41 @@
+{
+  "name": "Wekan",
+  "short_name": "Wekan",
+  "description": "Open-Source kanban",
+  "icons": [
+    {
+      "src": "wekan-logo-150.png",
+      "sizes": "150x150",
+      "type": "image/png"
+    },
+    {
+      "src": "wekan-logo-150.svg",
+      "sizes": "150x150",
+      "type": "image/svg+xml"
+    },
+    {
+      "src": "wekan-logo-256.png",
+      "sizes": "256x256",
+      "type": "image/png"
+    },
+    {
+      "src": "wekan-logo-256.svg",
+      "sizes": "256x256",
+      "type": "image/svg+xml"
+    },
+    {
+      "src": "wekan-logo-512.png",
+      "sizes": "512x512",
+      "type": "image/png"
+    },
+    {
+      "src": "wekan-logo-512.svg",
+      "sizes": "512x512",
+      "type": "image/svg+xml"
+    }
+  ],
+  "display": "fullscreen",
+  "background_color": "#dedede",
+  "theme_color": "#dedede",
+  "start_url": "/"
+}

public/wekan-manifest.json

@@ -1,22 +0,0 @@
-{
-  "name": "Wekan",
-  "short_name": "Wekan",
-  "description": "The open-source kanban",
-  "lang": "en-US",
-  "icons": [
-    {
-      "src": "/wekan-logo-150.png",
-      "type": "image/png",
-      "sizes": "150x150"
-    },
-    {
-      "src": "/wekan-logo-150.svg",
-      "type": "image/svg+xml",
-      "sizes": "150x150"
-    }
-  ],
-  "display": "standalone",
-  "background_color": "#dedede",
-  "theme_color": "#dedede",
-  "start_url": "/"
-}