Docs update (#61)

* Improve sphinx documentation

* update faq formatting

* fix setup doc

* fix docs according to the generated htmls

docs/ahriman.core.database.rst

@@ -0,0 +1,31 @@
+ahriman.core.database package
+=============================
+
+Subpackages
+-----------
+
+.. toctree::
+   :maxdepth: 4
+
+   ahriman.core.database.data
+   ahriman.core.database.migrations
+   ahriman.core.database.operations
+
+Submodules
+----------
+
+ahriman.core.database.sqlite module
+-----------------------------------
+
+.. automodule:: ahriman.core.database.sqlite
+   :members:
+   :no-undoc-members:
+   :show-inheritance:
+
+Module contents
+---------------
+
+.. automodule:: ahriman.core.database
+   :members:
+   :no-undoc-members:
+   :show-inheritance: