Now notifying user if there was an error trying to load an asynchronous tab within a Panel component.
Now notifying user if there was an error trying to load an asynchronous tab within a Panel component.

--HG--
extra : convert_revision : svn%3A23a7edcc-78fa-46f5-8c17-2ede83e4f0cd/trunk%401062

underbluewaters/marinemap,underbluewaters/marinemap,underbluewaters/marinemap