add back column temporarily to make deployment smoother

db/fixtures/002_groups.rb

@@ -4,3 +4,12 @@ if g = Group.find_by(name: 'trust_level_5', id: 15)
 end
 
 Group.where(name: 'everyone').update_all(visibility_level: Group.visibility_levels[:owners])
+
+ColumnDropper.drop(
+  table: 'groups',
+  after_migration: 'AddVisibleBackToGroups',
+  columns:  %w[visible],
+  on_drop: ->(){
+    STDERR.puts 'Removing superflous visible group column!'
+  }
+)