Wire up some OHM community resources.

config/locales/en.yml

@@ -1934,14 +1934,17 @@ en:
       community_driven_1_html: |
         OpenHistoricalMap's community is diverse, passionate, and growing every day.
         Our contributors include enthusiast mappers, academics, digital  historians, historical societies,
-        and many more. To learn more about the community, see the %{user_diaries_link} etc.
-      community_driven_osm_blog: OpenStreetMap Blog
-      community_driven_osm_blog_url: https://blog.openstreetmap.org
+        and many more.
+        To learn more about the community, see the %{osm_blog_link},
+        %{user_diaries_link}, %{community_blogs_link}, and the
+        %{osm_foundation_link}.
+      community_driven_osm_blog: OHM News
+      community_driven_osm_blog_url: https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/News
       community_driven_user_diaries: user diaries
-      community_driven_community_blogs: community blogs
-      community_driven_community_blogs_url: https://blogs.openstreetmap.org/
-      community_driven_osm_foundation: OSM Foundation
-      community_driven_osm_foundation_url: https://www.osmfoundation.org/
+      community_driven_community_blogs: Forum
+      community_driven_community_blogs_url: https://forum.openhistoricalmap.org/
+      community_driven_osm_foundation: '#openhistoricalmap channel on the OSMUS Slack workspace'
+      community_driven_osm_foundation_url: https://slack.openstreetmap.us/
       open_data_title: Open Data
       open_data_1_html: |
         <p>OpenHistoricalMap is <i>open data</i>: you are free to use it for any purpose