[STF] STF will again startup correctly

One resource bundle was removed and hence an JVM error was thrown.

Change-Id: I09535b66092dc019d8a4919ab0c47ea43a33797d
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1949
Tested-by: Jenkins CI
Reviewed-by: Stefan Rossbach <srossbach@arcor.de>