[Checkins] [zopefoundation/Products.ZCatalog] 4db0fb: Extract logic from template.

[Jürgen Gmach]

  Branch: refs/heads/issue_84
  Home:   https://github.com/zopefoundation/Products.ZCatalog
  Commit: 4db0fbb06d8144cc8d0131e5c7ea0e2c33c52e8a
      https://github.com/zopefoundation/Products.ZCatalog/commit/4db0fbb06d8144cc8d0131e5c7ea0e2c33c52e8a
  Author: Jürgen Gmach <juergen.gmach at googlemail.com>
  Date:   2020-01-08 (Wed, 08 Jan 2020)

  Changed paths:
    M src/Products/ZCatalog/ZCatalog.py
    M src/Products/ZCatalog/zpt/catalogIndexes.zpt

  Log Message:
  -----------
  Extract logic from template.

Instead of looking up available indexes in the template and sorting
them, now there is a method in ZCatalog.

This fixes #84

modified:   src/Products/ZCatalog/ZCatalog.py
modified:   src/Products/ZCatalog/zpt/catalogIndexes.zpt