- signing and signature verification operations move to Digest class
- Resource#unpack now handles zip-files as well
- Getdown moved to GetdownController to make the difference between GetdownApp, GetdownApplet and GetdownController clearer
- If the Jar/GetDownApp-class is signed, we require that the digest must be signed with one of the certificates used to signe the jar (allows digest verification when deploying getdown via a "webstart-starter")
-  removed "legacy support"-main-Method in Getdown-Controller