Redeployment when someone starts with a continent

<Subject>:
* When the initial deployment of the countries is done, the server should check whether someone starts with a whole continent. If so, then the deployment should be deleted and a new one should be created.
<Body>:
* Why it is needed:
It is an unfair advantage when someone starts with a whole continent. That is something that we would just restart when playing a boardgame of RISK
* Priority** (1-5): 3
* When the initial deployment of the countries is done, the server should check whether someone starts with a whole continent. If so, then the deployment should be deleted and a new one should be created.
<Body>:
* Why it is needed:
It is an unfair advantage when someone starts with a whole continent. That is something that we would just restart when playing a boardgame of RISK
* Priority** (1-5): 3