TestBench 5 calls itself TestBench 4

[enver-haase]

At least in LicenseChecker it goes: "Your license for TestBench 4 has not been validated. Check your network connection."

But also at start-up, when I run TestBench 5 from Maven, my license for TestBench 4 is read out to me; but as it is a Pro-Tools subscription (not a perpetual license), this is wrong. Would also suggest to use a String constant for the version and reference it throughout.