Add autodocs of modulestores

docs/en_us/developers/source/common-lib.rst

@@ -6,6 +6,7 @@ Contents:
    :maxdepth: 2
 
    xmodule.rst
+   modulestore.rst
    capa.rst
    chem.rst
    sandbox-packages.rst

docs/en_us/developers/source/modulestore.rst

+*******************************************
+Xmodule.Modulestore
+*******************************************
+
+.. contents:: Table of Contents
+
+.. automodule:: xmodule.modulestore
+    :members:
+    :show-inheritance:
+
+Modulestores
+============
+
+These implement the :class:`.ModuleStoreRead` and :class:`.ModuleStoreWrite`
+to provide access to XBlock content.
+
+.. automodule:: xmodule.modulestore.xml
+    :members:
+    :show-inheritance:
+
+.. automodule:: xmodule.modulestore.mongo
+    :members:
+    :show-inheritance:
+
+.. automodule:: xmodule.modulestore.split_mongo
+    :members:
+    :show-inheritance:
+
+
+Modulestore Helpers
+-------------------
+
+These packages provide utilities for easier use of modulestores,
+and migrating data between modulestores.
+
+.. automodule:: xmodule.modulestore.loc_mapper_store
+    :members:
+    :show-inheritance:
+
+.. automodule:: xmodule.modulestore.search
+    :members:
+    :show-inheritance:
+
+.. automodule:: xmodule.modulestore.mongoengine_fields
+    :members:
+    :show-inheritance:
+
+.. automodule:: xmodule.modulestore.split_migrator
+    :members:
+    :show-inheritance:
+
+.. automodule:: xmodule.modulestore.store_utilities
+    :members:
+    :show-inheritance:
+
+
+
+Content Keys
+============
+
+These packages provide the definition of the key types that are
+used in the modulestores to address content, and definitions of
+key types.
+
+.. automodule:: xmodule.modulestore.keys
+    :members:
+    :show-inheritance:
+
+.. automodule:: xmodule.modulestore.locations
+    :members:
+    :show-inheritance:
+
+.. automodule:: xmodule.modulestore.locator
+    :members:
+    :show-inheritance:
+
+
+
+Xml Import/Export
+=================
+
+These packages focus on importing and exporting xml serialized
+course content to/from modulestores.
+
+.. automodule:: xmodule.modulestore.xml_exporter
+    :members:
+    :show-inheritance:
+
+.. automodule:: xmodule.modulestore.xml_importer
+    :members:
+    :show-inheritance:
+
+
+
+Miscellaneous
+=============
+
+.. automodule:: xmodule.modulestore.django
+    :members:
+    :show-inheritance:
+
+.. automodule:: xmodule.modulestore.exceptions
+    :members:
+    :show-inheritance:
+
+.. automodule:: xmodule.modulestore.inheritance
+    :members:
+    :show-inheritance:
+
+