eom: update to 1.22

### eom 1.22.0

  * tx: sync with transifex
  * Add update-authors.pl script which helps to update eom.about
  * Read authors (updated) and documenters (updated) from eom.about gresource
  * Initialize Travis CI support
  * Ensure proper translation of the about dialog title
  * Make translatable the copyright in about dialog
  * Help - fix gui labels
  * disable deprecation warnings for distcheck
  * Update the appdata XML file
  * Use make functions for HELP_LINGUAS
  * Fix url of ulink to point to mate-user-guide
  * Update Catalan screenhots
  * Fix spelling and grammar mistakes
  * Update eom_start_window.png
  * tx: add eom help to transifex config
  * Reduce the number of g_file_query_info calls at start-up
  * EomImage: Remove unused constructor
  * fix a memory leak

(gutteridge)