* master: (212 commits)
  Import standard GNOME Flatpak CI config rather than copy/pasting it
  Update Gitlab CI Flatpak build with standard template
  Fix build with new FolderPath API
  Only collapse runs of space, tab, carriage return, and newline
  Do not add non openable folders entry in sidemenu. Bug 712902
  Reducing padding in conversation viewer list
  Fix build warnings
  Fix possible critical when removing an account is removed
  Fix local accounts for special-case providers not configured correctly
  Rework GenericAccount::ensure_special_folder_asyc yet again
  Add some useful debugging to GenericAcount
  Fix ambiguous test in AccountInformation.set_special_folder
  Fix pathological FolderPath.is_equal() case, add unit test
  Revamp Geary.FolderPath implementation
  Add additional FolderPath unit tests
  Convert Geary.FolderRoot to be an actual root, not just a top-level
  Stop duplicate inboxes being created, not being listed
  Ensure MinimalFolder remote open forces closed on hard errors
  Ensure accounts don't accidentially create multiple inbox-type folders
  Remove unwanted debuging cruft
  ...