[gupnp] (3 commits) Non-fast-forward update to branch wip/gi-docgen

[Jens Georg <jensgeorg src gnome org>]

The branch 'wip/gi-docgen' 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:

  9c7135e... wip
  aeb4cb2... wip: More doc fixes
  d6100cb... wip
  5d2ab77... wip
  dc48db2... wip
  d569b44... doc: Change titles of tutorials
  391cc0d... doc: Update Context docs
  dc1021e... RootDevice: Update documentation
  d8b9a52... DeviceProxy: Update docs
  835939e... wip
  55b2c52... wip
  199e01f... di-doc fixes
  7a06aaa... wip
  e40db47... Wip

Commits added to the branch:

  89bb1a9... docs: Use gi-docgen instead of gtk-doc
  2d0dc90... build: Distribute docs
  12d2db9... doc: Remove old gtk-doc files