4teamwork/ftw.upgrade — pull request #20 by lukasgraf (2013-04-23 15:02:07+00:00)
Title: Added remove_broken_browserlayer method to step class.

Removes a browser layer registration whose interface can't be imported any more from the persistent registry.
Messages like these on instance boot time can be an indication for this problem:
``WARNING OFS.Uninstalled Could not import class 'IMyProductSpecific' from module 'my.product.interfaces'``