Check the existence of the active tab
if the application is a link, it can not have an associated help text...
show the different between two refresh time...
more fixes
Allow to save a set of external links on a desktop
fix the loading a shared desktop state when it contains external links
save the applications which are not openned...
free the memory when the desktop is closed/
...
do not duplicate the application when it is changed
When an application open in a desktop we must remove the correct application from cache...
Merge pull request #171 from zmathe/dev_dec_15_fixes

[v5r2] - fixes and changing the save behaviour of the tab theme.