[Checkins] [zopefoundation/Zope] be58c1: Make ApplicationManger persistent again.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Zope
  Commit: be58c1e13bd5e5963eb6825bce28e82bf95f1c64
      https://github.com/zopefoundation/Zope/commit/be58c1e13bd5e5963eb6825bce28e82bf95f1c64
  Author: Steffen Allner <sa at gocept.com>
  Date:   2017-09-15 (Fri, 15 Sep 2017)

  Changed paths:
    M CHANGES.rst
    M src/App/ApplicationManager.py

  Log Message:
  -----------
  Make ApplicationManger persistent again.

On first startup of a ZODB created with a Zope 2.13 instance, the Control_Panel should be deleted. To achieve this, we need to load it first, which breaks if the class is not persistent as before in Zope 2.13. This change can be removed in a future 5.0 as the Control_Panel is not present in ZODB in Zope 4.