OMEdit: Two re-simulate enhancements for single model simulation

[Jan Kokert]

1.) The new Re-simulate options are nice (r23535). But if you only have one model the message "You must select a class to re-simulate" is annoying. A default behavior of selecting the (single) model would be good.

2.) In the case of a single model the list of achieved simulations show entries having all the same label. Here additional information like date and time of simulation, parameters like the simulation time and a short success hint (test failure count) would be helpful to distinguish the entries.

[Adeel Asghar]

Fixed in r23846.