Log Message:
Update liferea to 1.4.23.

Version 1.4.23 (Stable)

* Fixes unsubstituted variable in start script.
  (reported by Peter van der Does)
* Fixes Debian #494741: Crashes on exit after closing
  update monitor dialog with ESC. (reported by ygrek)

Version 1.4.22 (Stable)

* Fixes a typo in XulRunner initialization #ifdef
  (suggested by Peter van der Does)
* Fixes a typo in configure.ac
  (suggested by Peter van der Does)
* Fixes SF #2266119: configure error if gecko disabled.
  (reported by Vincent Lefevre)
* Fixes a XulRunner build issue with new gecko.m4 macro.
  (suggested by Peter van der Does)
* Fixes a DB migration issue that might occur when
  upgrading from schema version < 5 to 7.
  (patch by Thomas B)
* New M4 macro for Gecko detection derived from Yelp.
  This should improve compilation against XulRunner 1.9
  on Debian.
* Removes gray colouring of updated item titles.
  This often confused users to believe the item
  state was unread.
* Fixes for French translation (Vincent Lefevre)

Version 1.4.20 (Stable)

* Fixes SF #2042420: "Toggle Read Status" item list
  popup menu option (reported by Jeff Fortin)
* Fixes SF #2027445: Incorrect invalid encoding errors.
  (reported by Roman Beslik)
* Fixes "lost" views. View in the cache database that
  are not used anymore will be dropped on startup.
  (reported by Maik Zumstrull)
* Added new Slovakian translation (Pavol Klacansky)