Update cabinets and document_index api views docstrings. Update multi level docstrings as per Python best practices.

Signed-off-by: Michael Price <loneviking72@gmail.com>

mayan/apps/sources/api_views.py

@@ -33,7 +33,6 @@ class APIStagingSourceListView(generics.ListAPIView):
     """
     get: Returns a list of all the staging folders and the files they contain.
     """
-
     serializer_class = StagingFolderSerializer
     queryset = StagingFolderSource.objects.all()
 

mayan/apps/sources/tests/test_views.py

@@ -79,7 +79,6 @@ class DocumentUploadTestCase(GenericDocumentViewTestCase):
         Test uploading of documents by granting the document create
         permssion for the document type to the user
         """
-
         self.login_user()
 
         # Create an access control entry giving the role the document
@@ -226,7 +225,6 @@ class NewDocumentVersionViewTestCase(GenericDocumentViewTestCase):
             - Link to upload version view should not resolve
             - Upload version view should reject request
         """
-
         self.login_admin_user()
 
         NewVersionBlock.objects.block(self.document)

mayan/apps/sources/wizards.py

@@ -22,7 +22,6 @@ def has_metadata_types(wizard):
     """
     Skip the 2nd step if document type has no associated metadata
     """
-
     cleaned_data = wizard.get_cleaned_data_for_step(STEP_DOCUMENT_TYPE) or {}
 
     document_type = cleaned_data.get('document_type')