Bug 537464 - fix wrapping in project natures property page

Make the header composite fill horizontally. The contained label is
already prepared for wrapping.

Change-Id: I4f4ae0537ef8163acc51d81292ee8060945892e8
Signed-off-by: Michael Keppler <Michael.Keppler@gmx.de>
diff --git a/bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/ProjectNaturesPage.java b/bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/ProjectNaturesPage.java
index 84ce42b..720ab2e 100644
--- a/bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/ProjectNaturesPage.java
+++ b/bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/ProjectNaturesPage.java
@@ -104,6 +104,7 @@
 		initialize();
 
 		Composite header = new Composite(composite, SWT.NONE);
+		header.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		header.setLayout(
 				GridLayoutFactory.fillDefaults().numColumns(2).extendedMargins(0, 0, 10, 0).spacing(10, 0).create());
 		Label warningImageLabel = new Label(header, SWT.NONE);