Splitted keepass2android project into

- keepass2android: UI stuff only
 - Kp2aBusinessLogic: Password-Database related algorithms (even though tied to android, no UI required here)

Removed dependencies of logic layer to static Application, Resource class or other UI stuff
Added MonoDroidUnitTesting (not yet used, will be used for testing logic layer)

src/Kp2aBusinessLogic/IDrawableFactory.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+using Android.App;
+using Android.Content;
+using Android.OS;
+using Android.Runtime;
+using Android.Views;
+using Android.Widget;
+using Android.Content.Res;
+using KeePassLib;
+using Android.Graphics.Drawables;
+
+namespace keepass2android
+{
+    public interface IDrawableFactory
+    {
+        void assignDrawableTo (ImageView iv, Resources res, PwDatabase db, PwIcon icon, PwUuid customIconId);
+
+        Drawable getIconDrawable(Resources res, PwDatabase db, PwIcon icon, PwUuid customIconId);
+
+
+        void Clear();
+    }
+}