1.15.5 Unstable

This release brings small improvements to the trayicon plugin and content filtering using DOMPurify which should increase security against XSS attacks via feeds providing rich HTML content.

Changes

* #1322 Remove Mate workaround from trayicon plugin
  (Yuri Konotopov)

* #1318 Set prgname to match application id (needed for KDE)
  (bbhtt)

* #1317 Support XDG_CONFIG_HOME for trayicon plugoin config
  (bbhtt)

* Update Readability.js to recent version
  (Lars Windolf)

* Added DOMPurify.js for content filtering
  (Lars Windolf)