Add some more "handler" docs

app handler, batch handlers, native batch types, people handler

docs/base/handlers/other/index.rst

@@ -0,0 +1,20 @@
+
+Other / Misc. Handlers
+======================
+
+Here are some handlers which are specific to various aspects of the
+business logic, or a particular feature etc.
+
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   board
+   clientele
+   email
+   employment
+   feature
+   people
+   products
+   report