Allow the zone macro to be added inline

This macro will likely be used in tables, columns, inside content ...
It would be even better if it could work in inline

The objective is to avoid this message :
"This is a standalone macro only and it cannot be used inline. This macro generates standalone content. As a consequence you need to make sure to use a syntax that separates your macro from the content before and after it so that it's on a line by itself. For example in XWiki Syntax 2.0+ this means having 2 newline characters (a.k.a line breaks) separating your macro from the content before and after it."

problem

• If a link is added and the button displayed, the design may look pretty bad.