other android fixes

mining.html

@@ -1,7 +1,8 @@
 <!doctype html>
 <html>
 <head>
-<meta charset="utf-8"/>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Mined Cards</title>
 <style>
 body