* debian/patches:
  - xubuntu_use-tumbler.patch: updated, preserve ratio of original images.
  - xubuntu_single-click-option.patch: refreshed, based on the latest
    version from upstream bug report.
  - xubuntu_refreshed-translations.patch: added, new translations taken
    from Thunar as the added string is also used there.
* debian/rules: drop obsolete configure flag.