[evince] (6 commits) Non-fast-forward update to branch wip/chpe/export-print-portal

[Christian Persch <chpe src gnome org>]

The branch 'wip/chpe/export-print-portal' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  57b5795... shell: Fix critical on startup
  c11115a... libview: Whitespace cleanup
  c0fd4c3... libview: Use GObject:constructed instead of constructor
  d486f83... libview: Split the unix printing impl from the export print
  d97a4b9... libdocument: Add portal helper function
  cc3bd9f... libview: Add Portal implementation of EvPrintOperationExpor

Commits added to the branch:

  3ed96f3... shell: Fix critical on startup
  4742c39... libview: Whitespace cleanup
  464a68a... libview: Use GObject:constructed instead of constructor
  448d774... libview: Split the unix printing impl from the export print
  ca9ee19... libdocument: Add portal helper function
  1d9fa3b... libview: Add Portal implementation of EvPrintOperationExpor