* upstream/master:
  Move event processing from source tab into entry editor (#3116)
  Update Menu_ja.properties (#3125)
  Update JabRef_ja.properties (#3126)
  Localization: French: Translation of new entries (#3124)
  Fix changelog - no date for fixes
  Fix markdown
  Additional filter functionality for Check Integrity popup (#3120)
  Workround: make snapcraft find jabref.desktop
  Enable publishing so that users do not need to execute --devmode
  Update jabref.desktop
  Enable publishing so that users do not need to execute --devmode
  Release beta version also on snapcraft
  Workround: make snapcraft find jabref.desktop
  Fix branch name
  Use newer image
  Set executable for all (and not for owner only)
  Add comment on version replacement
  Enable creation of an Ubuntu snap

* upstream/master: (269 commits)
  Customjfxpanel (#3128)
  Make constants more obvious; improve logging
  Rename variables and make use of Java8 streams
  Re-add "Normalize to BibTex name format" context menu item and menu item tooltips
  Tweak build.gradle and external-libraries
  Work in feedback
  Files can be dropped to entry preview panel to attach a file again.
  Update IntelliJ howto to IntelliJ version 2017.2
  Move event processing from source tab into entry editor (#3116)
  Update Menu_ja.properties (#3125)
  Update JabRef_ja.properties (#3126)
  Localization: French: Translation of new entries (#3124)
  Fix changelog - no date for fixes
  Fix markdown
  Additional filter functionality for Check Integrity popup (#3120)
  Workround: make snapcraft find jabref.desktop
  Enable publishing so that users do not need to execute --devmode
  Update jabref.desktop
  Enable publishing so that users do not need to execute --devmode
  Release beta version also on snapcraft
  ...