[Checkins] [zopefoundation/Zope] 474cd5: Resurrect ZODB packing from the ZMI (#627)

[Jens Vagelpohl]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Zope
  Commit: 474cd531550d32a1c5a0f1874763227067760178
      https://github.com/zopefoundation/Zope/commit/474cd531550d32a1c5a0f1874763227067760178
  Author: Jens Vagelpohl <jens at netz.ooo>
  Date:   2019-05-17 (Fri, 17 May 2019)

  Changed paths:
    M CHANGES.rst
    M docs/zopebook/MaintainingZope.rst
    M src/App/ApplicationManager.py
    M src/App/dtml/dbMain.dtml
    M src/App/tests/test_ApplicationManager.py

  Log Message:
  -----------
  Resurrect ZODB packing from the ZMI (#627)

* - remove tabs and reformat for better readability

* - Resurrect ZODB packing from the ZMI

* - remove broken and terrible advice involving URL-whacking the ZMI

* - remove unused parameter

* - add test and do value coercion if needed