Redirect log messages from logback/TeeTime

When using TeeTime, a certain amount of log messages is still visible in the console:

21:36:18,001 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy]
21:36:18,001 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
...

Those messages from the logback framework (or TeeTime?) should be redirected into the TeeTime logging file (or another, third logging file).