[bug-OpenMage#151] Incorrect padding for .grid-severity-notice css class

Fixes 1px line margin so left and right are not separated

skin/adminhtml/default/default/boxes.css

@@ -1412,7 +1412,7 @@ ul.super-product-attributes { padding-left:15px; }
 .grid-severity-minor,
 .grid-severity-minor span,
 .grid-severity-notice,
-.grid-severity-notice span { display:block; height:16px; background-image:url(images/bg_notifications.gif); background-repeat:no-repeat; font:bold 10px/16px Arial, Helvetica, sans-serif; text-transform:uppercase; text-align:center; padding:0 0 0 7px; margin:1px 0; white-space:nowrap; color:#fff; }
+.grid-severity-notice span { display:block; height:16px; background-image:url(images/bg_notifications.gif); background-repeat:no-repeat; font:bold 10px/16px Arial, Helvetica, sans-serif; text-transform:uppercase; text-align:center; padding:0 0 0 6px; margin:1px 0; white-space:nowrap; color:#fff; }
 .grid-severity-critical { background-position:0 0; }
 .grid-severity-critical span { background-position:100% 0; padding:0 7px 0 0; }
 .grid-severity-major { background-position:0 -16px; }