Log Message:
mate-control-center: update to mate-control-center 1.22.2

Change log:

mate-control-center 1.22.2

  * tx: sync with transifex
  * fv: thumbnailer: add font/collection to the supported mimetypes
  * font-viewer: Add font/ttf and font/otf mime types
  * drop libXxf86 dependency
  * appearance.ui (cursor size scale)
  * Fix the icon sizes in Preferred Applications selector
  * add icon for the font viewer window
  * Fix grammar mistake