[gnome-documents] Created tag 3.22.4

[Debarshi Ray <debarshir src gnome org>]

The signed tag '3.22.4' was created.

Tagger: Debarshi Ray <debarshir gnome org>
Date: Wed Jun 7 17:43:28 2017 +0200

    Release 3.22.4

Changes since the last tag '3.22.3':

Debarshi Ray (16):
      documents: Track nfo:fileName for later use
      documents: Add property to denote the URI to be loaded by the preview
      documents: Let everybody provide their own download implementation
      documents: Implement the downloadImpl vfunc for SkydriveDocument
      documents, pdf-loader: Fix previewing of ODFs and OOXMLs on OneDrive
      documents: Fix the retrieval of the cache's modification time
      documents: Specify uriToLoad for GoogleDocument
      documents: Implement downloadImpl for GoogleDocument
      documents, pdf-loader: Reduce the reliance on GdPdfLoader for Google
      documents: Use a global named constant for the ownCloud prefix
      documents, pdf-loader: Reduce the reliance on GdPdfLoader for ownCloud
      pdf-loader: Remove unused function
      pdf-loader: Remove the unused unoconv-based PDF conversion code
      documents: Add a generic load implementation to DocCommon
      documents: Sprinkle debug
      release: prepare for 3.22.4