Refactor media upload

Use Upload Media logic from Pleroma

Backend changes for picture upload

Move AS <-> Model conversion to separate module

Front changes

Downgrade apollo-client: https://github.com/Akryum/vue-apollo/issues/577

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

priv/repo/migrations/20190426093202_create_pictures.exs

@@ -0,0 +1,41 @@
+defmodule Mobilizon.Repo.Migrations.CreatePictures do
+  use Ecto.Migration
+
+  def up do
+    create table(:pictures) do
+      add(:file, :map)
+
+      timestamps()
+    end
+
+    alter table(:actors) do
+      remove(:avatar_url)
+      remove(:banner_url)
+      add(:avatar, :map)
+      add(:banner, :map)
+    end
+
+    alter table(:events) do
+      remove(:thumbnail)
+      remove(:large_image)
+      add(:picture_id, references(:pictures, on_delete: :delete_all))
+    end
+  end
+
+  def down do
+    alter table(:actors) do
+      add(:avatar_url, :string)
+      add(:banner_url, :string)
+      remove(:avatar)
+      remove(:banner)
+    end
+
+    alter table(:events) do
+      add(:large_image, :string)
+      add(:thumbnail, :string)
+      remove(:picture_id)
+    end
+
+    drop(table(:pictures))
+  end
+end