"Save and Control" buttons

[nic547]

From my own testing, after editing an engine, controlling it is generally the next action I want to do. Currently this is a bit clunky, I need to save, go to the engine list and take control from there.
IIRC the engine list stays open when editing an engine, so already existing engines do not get "lost" - but new engines will just not appear in the list until reloaded. In theory this is also a bit of a "race condition", after saving the engine is released and in theory another user could acquire the engine before I can re-acquire it.