Papers 48.8
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* Bug fixes:
  - #576 Ctrl+F sometimes does not focus search box when query is blank (Roberto Vidal)
  - #343 Page number is not in the center of the number box (Malika Asman)
  - #558 Keyboard input unresponsive in presentation mode, unable to exit with Esc (Lukáš Tyrychtr)
  - !693 help: Update icon (Sabri Ünal)

* Translation updates:
  - Occitan (Quentin PAGÈS)
  - Chinese (Taiwan) (Cheng-Chia Tseng)