restructure main api page

docs/source/dartwrf.rst

 dartwrf package
 ===============
 
-Subpackages
------------
-
-.. toctree::
-   :maxdepth: 4
-
-   dartwrf.obs
-
-Submodules
-----------
-
-dartwrf.assimilate module
---------------------------------
+Configuration: dartwrf.utils module
+--------------------
 
-.. automodule:: dartwrf.assimilate
+.. automodule:: dartwrf.utils
    :members:
    :undoc-members:
    :show-inheritance:
 
-dartwrf.create\_obs\_upfront module
------------------------------------
 
-.. automodule:: dartwrf.create_obs_upfront
+Job-Submission: dartwrf.workflows module
+------------------------
+
+.. automodule:: dartwrf.workflows
    :members:
    :undoc-members:
    :show-inheritance:
 
-dartwrf.create\_wbubble\_wrfinput module
-----------------------------------------
 
-.. automodule:: dartwrf.create_wbubble_wrfinput
+Submodules
+----------
+
+dartwrf.assimilate module
+--------------------------------
+
+.. automodule:: dartwrf.assimilate
    :members:
    :undoc-members:
    :show-inheritance:
@@ -52,30 +46,6 @@ dartwrf.evaluate\_obs\_space module
    :undoc-members:
    :show-inheritance:
 
-dartwrf.evaluate\_posterior module
-----------------------------------
-
-.. automodule:: dartwrf.evaluate_posterior
-   :members:
-   :undoc-members:
-   :show-inheritance:
-
-dartwrf.evaluate\_prior module
-------------------------------
-
-.. automodule:: dartwrf.evaluate_prior
-   :members:
-   :undoc-members:
-   :show-inheritance:
-
-dartwrf.exp\_config module
---------------------------
-
-.. automodule:: dartwrf.exp_config
-   :members:
-   :undoc-members:
-   :show-inheritance:
-
 dartwrf.prep\_IC\_prior module
 ------------------------------
 
@@ -116,22 +86,6 @@ dartwrf.update\_IC module
    :undoc-members:
    :show-inheritance:
 
-dartwrf.utils module
---------------------
-
-.. automodule:: dartwrf.utils
-   :members:
-   :undoc-members:
-   :show-inheritance:
-
-dartwrf.workflows module
-------------------------
-
-.. automodule:: dartwrf.workflows
-   :members:
-   :undoc-members:
-   :show-inheritance:
-
 dartwrf.wrfinput\_add\_geo module
 ---------------------------------
 
@@ -148,10 +102,10 @@ dartwrf.wrfout\_add\_geo module
    :undoc-members:
    :show-inheritance:
 
-Module contents
----------------
+Subpackages
+-----------
+
+.. toctree::
+   :maxdepth: 4
 
-.. automodule:: dartwrf
-   :members:
-   :undoc-members:
-   :show-inheritance:
+   dartwrf.obs