Log Message:
Update atril to 1.21.1:

### atril 1.21.1

  * update translations
  * Use make functions for HELP_LINGUAS
  * comics: support application/vnd.rar MIME type
  * shell: Save document to the same path it was opened from
  * Reduce the chattiness of atril daemon
  * EvView: Fix cursor movement when logical and visual line order differs
  * Update atril_start_window.png
  * moveable (older spelling) -> movable
  * Update Catalan screenshot
  * presentation: avoid deprecated 'gtk_style_context_set_background'
  * ev-sidebar-bookmarks: use NULL instead of uninitialized variable
  * navigation-action-widget: replace deprecated gtk_menu_popup function
  * shell: replace deprecated gtk_menu_popup function
  * ev-sidebar-links: replace deprecated gtk_menu_popup function
  * ev-sidebar-bookmarks: replace deprecated gtk_menu_popup function
  * ev-sidebar: replace deprecated gtk_menu_popup function
  * editable-toolbar: replace deprecated gtk_menu_popup function
  * libview: replace deprecated gdk_flush
  * disable StartPresentation action in fullscreen if document has no pages
  * disable ViewPresentation action if document has no pages
  * libdocument: Use gdk_pixbuf_get_from_surface()
  * thumbnailer: Remove unused code
  * view: Fix page background rendering while loading
  * libdocument: Deprecate misc_get_page_border_size()
  * view: Use a rendered frame instead of custom border
  * a11y: Return correct start and end offsets
  * a11y: Fix crash with Orca screen reader
  * libview: drop deprecated unneeded code
  * ev-loading-message: Remove unused variables
  * libview: fix text selection with mouse in annotation window
  * libview: fix build without epub

### atril 1.21.0

  * shell: Don't dist generated files
  * Disable view presentation if there is no document.
  * Allow changing the page of a presentation
  * libview: Fix goto window in presentation mode
  * libview: avoid deprecated gdk_screen_get_monitor
  * EvPresentationView: Render correctly on hi-dpi displays
  * libview: Fix g_return condition in set_device_scale_on_surface()
  * EvView: render correctly on hi-dpi displays
  * libview: use css to draw the background of presentations
  * shell: Use GResource for data files
  * toolbar-editor: Add methods to load from GResource
  * previewer: Use GResource for data files
  * build: Add configure check for glib-compile-resources
  * update resource for translations
  * libview: Check number of pages when processing button events
  * libview: Add check for pageless documents to ev_view_accessible_focus_changed
  * libview: Check number of pages on ev_view_document_changed_cb
  * Use GtkOverlay to show the loading message
  * shell: Remove unused marshalers
  * thumbnailer: Send error messages to stderr
  * shell: Use GtkApplication to inhibit the screensaver
  * shell: Port to GtkApplication
  * shell: Use g_printerr instead of g_warning
  * daemon: Port to GApplication
  * daemon: Use gdbus-codegen for the org.mate.atril.Daemon interface
  * shell: Use gdbus-codegen for the org.mate.atril.Window interface
  * shell: Use gdbus-codegen for the org.mate.atril.Application interface
  * libview: save inverted colors in a document
  * Save/restore context when getting colors for a different state
  * epub: allow to save epub documents
  * epub:  fix loading epub thumbnails
  * Check legal boundaries of accessible pages
  * shell: fix menu-accel for inverted colors
  * shell: add keypad accels for zoom_reset
  * Add zoom reset
  * avoid deprecated GtkStock