Append ':' to label of project config param if info icon is displayed

Change-Id: I1e92adb4d115cd33817d814805e9c6e59437edea
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>

gerrit-gwtui/src/main/java/com/google/gerrit/client/admin/ProjectInfoScreen.java

@@ -487,6 +487,7 @@ public class ProjectInfoScreen extends ProjectScreen {
       infoImg.setTitle(param.description());
       p.add(new Label(getDisplayName(param)));
       p.add(infoImg);
+      p.add(new Label(":"));
       g.add(p, w);
     } else {
       g.add(getDisplayName(param), w);