OPDRV-190: Preventing excessive console logging
OPDRV-190: Preventing excessive console logging

OperaSettings is an instance class, whereas Java's Logging is not.
Since we are now doing the logging initialization in OperaSettings we
need to make sure we don't add more console handlers than necessary.

operasoftware/operaprestodriver,operasoftware/operaprestodriver,operasoftware/operaprestodriver