if nothing is deployed, the service-assemblies.jsp and service-units.jsp pages will still show the header of the table but won't print any information that "nothing was found" which looks lame
I provide a patch for this. Now if there are no elements to show it prints "No service assemblies found." or "No service units found." and no header will is visible.
This is my first patch for servicemix, I hope I did it right. 
Sending servicemix-web-console/src/main/webapp/service-assemblies.jsp
Sending servicemix-web-console/src/main/webapp/service-units.jsp
Transmitting file data ..
Committed revision 674533.