error output on build failure

[truefalse10]

Currently the console only shows a thumb down icon if the build fails. It would be nice if we could see the error message if an error occured during mvn package so i dont have to run it manually. Great tool btw!

[AdamBien]

Thanks! I actually spent some effort not to write the errors to the console and wrote a "SilentLogger" However, a short hint might be useful. I will try to address that in the next release.