Log Message:
Update to 1.2.23. From the changelog:

documentation:

* Update links to Xapian website and trac to use https, which is now supported,
  thanks to James Aylett.

indexers:

* Fix HTML/XML entity decoding to be O(n) not O(n²) - processing HTML/XML with
  a lot of entities is now much faster.

templates:

* Remove unused country code to name maps.  These were intended as examples,
  but they aren't very useful as such, and really just bloat the templates
  needlessly.