Code review comment for lp:~janosch-peters-deactivatedaccount/widelands/editor-remove-invalid-resources

I've merged trunk. Although it does not conflict with your current status of the branch it contains some fixes that this branch can be build by travis-ci.
Just merge trunk before resubmitting this merge request.

And if your last fix includes the fix i've done, just dissapprove it (my merge request).