Log Message:
Update konversation to 1.5.1

* Fixed a bug causing wildcards in command alias replacement patterns not
  to be expanded.
* Fixed a bug causing auto-joining of channels not starting in # or & to
  sometimes fail because the auto-join command was generated before we got
  the CHANTYPES pronouncement by the server.
* Added a size sanity check for incoming Blowfish ECB blocks. The blind
  assumption of incoming blocks being the expected 12 bytes could lead to
  a crash or up to 11 byte information leak due to an out-of-bounds read.
  This fixes CVE-2014-8483.
* Enabling SSL/TLS support for connections will now advertise the protocols
  Qt considers secure by default, instead of being hardcoded to TLSv1.
* Fixed the bundled 'sysinfo' script not coping with empty lines in
  /etc/os-release.
* Made disk space info in the bundled 'sysinfo' script more robust by
  forcing the C locale for 'df'.
* Added an audio player type hint for Cantata to the bundled 'media' script.
* Fixed some minor comparison logic errors turned up by static analysis.
* Konversation now depends on KDE Platform v4.9.0 or higher.