Sphinx-Gallery has to be loaded after autodoc

Sphinx loads its extensions sequentially as they are specified on the
list. Sphinx-Gallery relies en autodoc to generated the example
thumbnails when auto documenting the API. If autodoc is not loaded
sphinx-gallery skips this step, as it implies the user might not want
it. In this case we need it, so the gallery has to be loaded after
autodoc and autosummary.

The autosummary_generate variable is repeated

Author: Titan-C

doc/conf.py

@@ -30,13 +30,12 @@
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = ['sphinx_gallery.gen_gallery',
-              'sphinx.ext.autodoc', 'sphinx.ext.autosummary',
-              'sphinx.ext.pngmath', 'numpy_ext.numpydoc',
-              'sphinx.ext.linkcode', 'sphinx.ext.doctest',
-              ]
-
-autosummary_generate = True
+extensions = [
+    'sphinx.ext.autodoc', 'sphinx.ext.autosummary',
+    'sphinx.ext.pngmath', 'numpy_ext.numpydoc',
+    'sphinx.ext.linkcode', 'sphinx.ext.doctest',
+    'sphinx_gallery.gen_gallery',
+]
 
 autodoc_default_flags = ['members', 'inherited-members']
 
@@ -227,13 +226,13 @@
 
 sphinx_gallery_conf = {
     'doc_module': 'sklearn',
-    'reference_url'     : {
+    'reference_url': {
         'sklearn': None,
         'matplotlib': 'http://matplotlib.org',
         'numpy': 'http://docs.scipy.org/doc/numpy-1.6.0',
         'scipy': 'http://docs.scipy.org/doc/scipy-0.11.0/reference',
         'nibabel': 'http://nipy.org/nibabel'}
-    }
+}
 
 
 # The following dictionary contains the information used to create the
@@ -246,6 +245,7 @@
                    'sphx_glr_plot_adaboost_twoclass_001.png': 372,
                    'sphx_glr_plot_compare_methods_001.png': 349}
 
+
 def make_carousel_thumbs(app, exception):
     """produces the final resized carousel images"""
     if exception is not None:
@@ -256,7 +256,7 @@ def make_carousel_thumbs(app, exception):
     for glr_plot, max_width in carousel_thumbs.items():
         image = os.path.join(image_dir, glr_plot)
         if os.path.exists(image):
-            c_thumb = os.path.join(image_dir, glr_plot[:-4]+'_carousel.png')
+            c_thumb = os.path.join(image_dir, glr_plot[:-4] + '_carousel.png')
             sphinx_gallery.gen_rst.scale_image(image, c_thumb, max_width, 190)