docs: rearrange API docs per conventions used elsewhere

e.g. in WuttaSync..this convention is better i think..?

docs/index.rst

@@ -30,24 +30,54 @@ Features
 
 See also these projects which build on WuttJamaican:
 
-* :doc:`wutta-continuum:index`
-* `WuttaWeb <https://rattailproject.org/docs/wuttaweb/>`_
+* `WuttaWeb <https://rattailproject.org/docs/wuttaweb/>`_ - web app
+  framework
+* `WuttaSync <https://rattailproject.org/docs/wuttasync/>`_ - data
+  import/export and real-time sync
+* :doc:`wutta-continuum:index` - data versioning with
+  SQLAchemy-Continuum
 
 
 Contents
 --------
 
 .. toctree::
-   :maxdepth: 3
+   :maxdepth: 2
+   :caption: Documentation
 
    glossary
-   narr/index
-   api/index
+   narr/install/index
+   narr/config/index
+   narr/cli/index
+   narr/handlers/index
+   narr/providers/index
+   narr/db/index
 
+.. toctree::
+   :maxdepth: 1
+   :caption: API
 
-Indices and tables
-==================
-
-* :ref:`genindex`
-* :ref:`modindex`
-* :ref:`search`
+   api/wuttjamaican.app
+   api/wuttjamaican.auth
+   api/wuttjamaican.cli
+   api/wuttjamaican.cli.base
+   api/wuttjamaican.cli.make_uuid
+   api/wuttjamaican.conf
+   api/wuttjamaican.db
+   api/wuttjamaican.db.conf
+   api/wuttjamaican.db.model
+   api/wuttjamaican.db.model.auth
+   api/wuttjamaican.db.model.base
+   api/wuttjamaican.db.model.upgrades
+   api/wuttjamaican.db.sess
+   api/wuttjamaican.db.util
+   api/wuttjamaican.email
+   api/wuttjamaican.email.handler
+   api/wuttjamaican.email.message
+   api/wuttjamaican.enum
+   api/wuttjamaican.exc
+   api/wuttjamaican.install
+   api/wuttjamaican.people
+   api/wuttjamaican.progress
+   api/wuttjamaican.testing
+   api/wuttjamaican.util