Creating a new born branch triggers a warning about a running instance

[laeubi]

Do the following:

1. Start a java application and keep it running
2. No goto switch > new branch and enter "test" or similar
3. A Warning appears that there is a running application

While it seems okay to warn when I switch from A > B because this will maybe completely change my code, the warning seems not useful when I create a new branch as nothing will change to my code.