Improve registration page and add a rules option

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/graphql/resolvers/admin.ex

@@ -158,7 +158,8 @@ defmodule Mobilizon.GraphQL.Resolvers.Admin do
        registrations_open: Config.instance_registrations_open?(),
        instance_terms: Config.instance_terms(),
        instance_terms_type: Config.instance_terms_type(),
-       instance_terms_url: Config.instance_terms_url()
+       instance_terms_url: Config.instance_terms_url(),
+       instance_rules: Config.instance_rules()
      }}
   end
 

lib/graphql/resolvers/config.ex

@@ -106,7 +106,8 @@ defmodule Mobilizon.GraphQL.Resolvers.Config do
       timezones: Tzdata.zone_list(),
       features: %{
         groups: Config.instance_group_feature_enabled?()
-      }
+      },
+      rules: Config.instance_rules()
     }
   end
 end