Replace deprecated "apple-mobile-web-app-capable" tag

Author: rwinkhart

ui/ui.tmpl

@@ -4,7 +4,7 @@
     <meta charset="utf-8">
     <meta name="theme-color" content="rgb(45,52,54)">
     <meta name="msapplication-navbutton-color" content="rgb(45,52,54)">
-    <meta name="apple-mobile-web-app-capable" content="yes">
+    <meta name="mobile-web-app-capable" content="yes">
     <meta name="viewport" content="width=device-width">
 
     <link rel="manifest" href='data:application/manifest+json,{"name":"{{.Title}}","short_name":"{{.Title}}","description":"  ","icons":[{"src":"data:image/svg+xml;base64,favicon_will_be_here","sizes":"150x150","type":"image/svg+xml"}],"background":"rgb(45,52,54)","theme_color":"rgb(45,52,54)","display":"standalone"}' />