Find Object should report if not found in simbad

[Alberto]

In the Find Object panel I typed PGC37759 and pressed the lens ("GO") button.
Nothing happened.
I thought Virgo was dead, but in reaility the problem is that PGC37759 is not found in Simbad.
The panel should inform the user that the object is not found.

The Target panel instead correctly informs the user, though the status bar used for that
(between the input box and the search button) is very much difficult to see.

BTW, are you using sesame? It tries to resolve it using a cascade system through Simbad, NED, and Vizier.

[Fabien Chéreau (xalioth)]

In the stellarium search window, I improved user feedback by changing the enable state of the press button. If the search was unsuccessful, the button is disabled.
I also coded a status label showing the Simbad status, but this seems somewhat to technical info for the normal user so it is disabled.