Flat Grey lost the message pushed in the backend header

[Jacques Le Roux]

While answering to user ML I noticed that the refactoring of Flat Grey lost the message pushed in the backend header, see for 
instance top right of
https://demo-trunk.ofbiz.apache.org/catalog/control/main (admin/ofbiz)
with Tomahawk theme. It misses in Flat Grey now...
Thanks

Jacques