Enable HiDPI icons for Windows (first step)

This change enables HiDPI icons for Windows. Alas, there are issues
still missing: labels of pie charts too small, windows icons too small,
and possibly more. Alas, it is only a first step.

Issue: #411

name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/Images.java

@@ -64,10 +64,10 @@ public enum Images
         // But: for now it needs enabling via JFace debug option, which in turn
         // are only set when using the non-e4 org.eclipse.ui bundle. Alas, we
         // enable it directly.
-        // On Mac OS X it works, on Linux the wrong images got loaded, on
-        // Windows I could not tell a difference. Therefore I activated it only
-        // for Mac OS X.
-        if (Platform.OS_MACOSX.equals(Platform.getOS()))
+
+        // On Mac OS X and Windows it works for me, on Linux the wrong images
+        // got loaded. Therefore I do not activate it for Linux
+        if (!Platform.OS_LINUX.equals(Platform.getOS()))
             org.eclipse.jface.internal.InternalPolicy.DEBUG_LOAD_URL_IMAGE_DESCRIPTOR_2x = true;
     }
 

name.abuchen.portfolio.ui/src/name/abuchen/portfolio/ui/PortfolioPart.java

@@ -148,7 +148,7 @@ private void createContainerWithViews(Composite parent)
         container.setLayout(new FillLayout());
 
         SashForm sash = new SashForm(container, SWT.HORIZONTAL | SWT.SMOOTH);
-        sash.setSashWidth(1);
+        sash.setSashWidth(3);
 
         Composite navigationBar = new Composite(sash, SWT.NONE);
         GridLayoutFactory.fillDefaults().numColumns(1).spacing(0, 0).margins(0, 0).applyTo(navigationBar);