Added default configuration for logging

Hi Marco

This is a small fragment for ch.qos.logback with the default logback.xml from Elexis 2.1.7.

Feel free to adapt the the current pattern
%-4r [%t] %-5p %c %x - %m%n
The 2.1.7 used the pattern
%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n

See http://logback.qos.ch/manual/layouts.html

Add it to the plug-ins used when launching the console app and  you should see soemeting like

22:09:46,497 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy]
22:09:46,497 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
22:09:46,497 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at [bundleresource://6.fwk1222474803:1/logback.xml]
22:09:46,504 |-INFO in ch.qos.logback.core.joran.spi.ConfigurationWatchList@1e884ca9 - URL [bundleresource://6.fwk1222474803:1/logback.xml] is not of type file
22:09:46,539 |-INFO in ReconfigureOnChangeFilter{invocationCounter=0} - Will scan for changes in [[]] every 60 seconds. 
22:09:46,539 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Adding ReconfigureOnChangeFilter as a turbo filter
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