docs: Reference the extension pages instead of maintaining multiple lists

docs/api/backends.rst

@@ -93,29 +93,7 @@ Backend listener
     :members:
 
 
-.. _backend-implementations:
-
 Backend implementations
 =======================
 
-- `Mopidy-Beets <https://github.com/mopidy/mopidy-beets>`_
-
-- `Mopidy-GMusic <https://github.com/hechtus/mopidy-gmusic>`_
-
-- :ref:`ext-local`
-
-- `Mopidy-radio-de <https://github.com/hechtus/mopidy-radio-de>`_
-
-- `Mopidy-SomaFM <https://github.com/AlexandrePTJ/mopidy-somafm>`_
-
-- `Mopidy-SoundCloud <https://github.com/mopidy/mopidy-soundcloud>`_
-
-- `Mopidy-Spotify <https://github.com/mopidy/mopidy-spotify>`_
-
-- `Mopidy-Spotify-Tunigo <https://github.com/trygveaa/mopidy-spotify-tunigo>`_
-
-- :ref:`ext-stream`
-
-- `Mopidy-Subsonic <https://github.com/rattboi/mopidy-subsonic>`_
-
-- `Mopidy-VKontakte <https://github.com/sibuser/mopidy-vkontakte>`_
+See :ref:`ext-backends`.

docs/api/frontends.rst

@@ -42,17 +42,7 @@ The following requirements applies to any frontend implementation:
   specified events.
 
 
-.. _frontend-implementations:
-
 Frontend implementations
 ========================
 
-- :ref:`ext-http`
-
-- :ref:`ext-mpd`
-
-- `Mopidy-MPRIS <https://github.com/mopidy/mopidy-mpris>`_
-
-- `Mopidy-Notifier <https://github.com/sauberfred/mopidy-notifier>`_
-
-- `Mopidy-Scrobbler <https://github.com/mopidy/mopidy-scrobbler>`_
+See :ref:`ext-frontends`.

docs/api/http-server.rst

@@ -187,3 +187,9 @@ http://localhost:6680/mywebclient/.
             })
 
         # See the Extension API for the full details on this class
+
+
+API implementors
+================
+
+See :ref:`ext-web`.

docs/api/mixer.rst

@@ -17,6 +17,4 @@ Audio mixer API
 Mixer implementations
 =====================
 
-- `Mopidy-ALSAMixer <https://github.com/mopidy/mopidy-alsamixer>`_
-
-- :ref:`ext-softwaremixer`
+See :ref:`ext-mixers`.