adding log config files

*    adding logback.xml
*    some dependency comlained about log4j missing
      but only sometimes and only on cloud foundry
      ERR log4j:WARN No appenders could be found for logger (org.jboss.logging).
      ERR log4j:WARN Please initialize the log4j system properly.
      ERR log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.