Bug 552768 - Avoid showing the tips of day layout job to the user

We set this job to system so that the regular user does not have to
worry about it.

Change-Id: Ib7262f90d98fcb5ca5acb38c96ec08807812fa58
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>
diff --git a/org.eclipse.tips.ide/src/org/eclipse/tips/ide/internal/TipSourceProvider.java b/org.eclipse.tips.ide/src/org/eclipse/tips/ide/internal/TipSourceProvider.java
index 6eb9c5a..83b63b7 100644
--- a/org.eclipse.tips.ide/src/org/eclipse/tips/ide/internal/TipSourceProvider.java
+++ b/org.eclipse.tips.ide/src/org/eclipse/tips/ide/internal/TipSourceProvider.java
@@ -113,6 +113,7 @@
 			}
 
 		});
+		job.setSystem(true);
 		job.schedule(5000); // allow the workbench to settle in.
 	}
 }
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