Changed log4r configuration so that it doesn't output to stdout in the development environment.
Changed log4r configuration so that it doesn't output to stdout in the development environment.

It was unnecessary because if we run a "rails server" command, output is printed to the shell as well as to the file. The old log4r configuration caused every log line to be written twice to the shell.

jmwenda/feedbunch,amatriain/feedbunch,jmwenda/feedbunch,jmwenda/feedbunch,amatriain/feedbunch,amatriain/feedbunch,amatriain/feedbunch