Add support for communities page

Author: marcoacierno

backend/api/cms/page/blocks/dynamic_content_display_section.py

@@ -9,6 +9,7 @@ class DynamicContentDisplaySectionSource(enum.Enum):
     speakers = "speakers"
     keynoters = "keynoters"
     proposals = "proposals"
+    communities = "communities"
 
 
 @register_page_block()

backend/cms/components/page/blocks/dynamic_content_display_section.py

@@ -7,5 +7,6 @@ class DynamicContentDisplaySection(blocks.StructBlock):
             ("speakers", "Speakers"),
             ("keynoters", "Keynoters"),
             ("proposals", "Proposals"),
+            ("communities", "Communities"),
         ],
     )