Start solve only after simualtion is started

[neumantm]

Currently test() and in the most tasks therefore solve is run, when the solution is selected from the dropdown menu. And if the solve method does some none blocking checks on the simulation, they are done right away. This is very irritating, if you place some coins you want to check for, and then press the play button.

[haslersn]

I think this is a https://github.com/FIUS/JVK-2018 issue.