Yay I love OS X!!!!!!!!!!!!!!!!!!!! </sarcasm>

If using OS X UI, default to default padding in mig layout.

Change-Id: Ib2010399c032e87e8f9bf1f50438ffd7b0cdcdcf
Reviewed-on: http://gerrit.dmdirc.com/1232
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Shane Mc Cormack <shane@dmdirc.com>

src/com/dmdirc/addons/ui_swing/SwingController.java

         if ("Metal".equals(UIManager.getLookAndFeel().getName())) {
             PlatformDefaults.setPlatform(PlatformDefaults.WINDOWS_XP);
         }
+
+        if (Apple.isAppleUI()) {
+            PlatformDefaults.setPlatform(PlatformDefaults.WINDOWS_XP);
+        }
     }
 
     /**