Visual fixes

Make apploader logo black.
Clear gfx before drawing logo on startup.

apps.json

@@ -5453,7 +5453,7 @@
     "name": "Ruuvi Watch",
     "shortName":"Ruuvi Watch",
     "icon": "ruuviwatch.png",
-    "version":"1.00",
+    "version":"1.01",
     "description": "Keep an eye on RuuviTag devices (https://ruuvi.com). Only shows RuuviTags using the v5 format.",
     "readme":"README.md",
     "tags": "bluetooth",

apps/ruuviwatch/ChangeLog

@@ -1 +1,2 @@
 1.00: Hello Ruuvi Watch!
+1.01: Clear gfx on startup.

apps/ruuviwatch/ruuviwatch.app.js

@@ -123,6 +123,7 @@ require("Storage").write("ruuviwatch.info",{
     }, {timeout : 2000, filters : [{ manufacturerData:{0x0499:{}} }] });
   }
   
+  g.clear();
   g.drawImage(require("Storage").read("ruuviwatch.img"), g.getWidth()/2-24, g.getHeight()/2-24);
   
   var drawInterval = setInterval(redraw, 1000);