Introduce group basic federation, event new page and notifications

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

priv/repo/migrations/20200221160744_create_resources.exs

@@ -0,0 +1,23 @@
+defmodule Mobilizon.Repo.Migrations.CreateResources do
+  use Ecto.Migration
+
+  def change do
+    create table(:resource, primary_key: false) do
+      add(:id, :uuid, primary_key: true)
+      add(:title, :string, null: false)
+      add(:url, :string, null: false)
+      add(:type, :integer, null: false)
+      add(:summary, :text)
+      add(:resource_url, :string)
+      add(:metadata, :map)
+      add(:path, :string, null: false)
+
+      add(:parent_id, references(:resource, on_delete: :delete_all, type: :uuid), null: true)
+
+      add(:actor_id, references(:actors, on_delete: :delete_all), null: false)
+      add(:creator_id, references(:actors, on_delete: :nilify_all), null: true)
+
+      timestamps()
+    end
+  end
+end