Version 2.7.2
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* Make the scrollbar buttons work. (Martin) - #132489

* Keep "Loading failed" alerts on screen until the user dismisses
  them. (Martin) - #137262

* Outline view improvements. (Remi)

* Code clean-ups. (Remi)

* Remove Xpdf cruft from build system. (Martin) - #111404

* Make about box more translation tool-friendly. (Martin)

* Translation updates: Takeshi AIHANA (ja), Laurent Dhima (sq),
  Miloslav Trmac (cs)