[X] Run multiple app deployments in parallel (We don't bother setting up a thread pool, since (one assumes) there won't be thousands of parallel app deployments going on)
[x] Create method synchronized NebulousApp.deploy() to avoid the possibility of having two deployments in parallel, even if I don't see how that would be possible
synchronized NebulousApp.deploy()to avoid the possibility of having two deployments in parallel, even if I don't see how that would be possible