Import Debian changes 1.23-2

Import Debian changes 1.23-2

sendxmpp (1.23-2) unstable; urgency=medium

  * QA upload.
  * Ack for NMU. Thanks to Helmut Grohne <helmut@subdivi.de>. (Closes: #710285)
  * Set QA Group as maintainer. (see #868447)
  * New upstream homepage.
  * Migrations:
      - debian/copyright to 1.0 format.
      - DH level to 10.
  * debian/control:
      - Added a Homepage field.
      - Bumped Standards-Version to 4.0.0.
      - Improved the description.
  * debian/dirs: not needed. Removed.
  * debian/sendxmpp.examples: renamed to debian/examples.
  * debian/watch: created.