Add cms_block to uitls mutations

.gitignore

@@ -47,3 +47,4 @@ server/media/
 # test reports
 client/cypress/test-reports/
 server/test-reports/
+.direnv

server/books/schema/inputs.py

@@ -12,7 +12,7 @@ class InputTypes(graphene.Enum):
     video_block = 'video_block'
     document_block = 'document_block'
     content_list_item = 'content_list_item'
-    subtitle= 'subtitle'
+    subtitle = 'subtitle'
 
 
 class ContentElementValueInput(InputObjectType):

server/books/schema/mutations/utils.py

@@ -40,7 +40,8 @@ ALLOWED_BLOCKS = (
     'assignment',
     'document_block',
     'content_list_item',
-    'subtitle'
+    'subtitle',
+    'cms_document_block'
 )