Fix mix format and format migrations too

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

Fix credo warnings

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

Show elixir version

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

Also lint migrations

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

Reset allow failure to false

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

priv/repo/migrations/20180628130746_add-user-password-reset-fields.exs

@@ -3,16 +3,21 @@ defmodule :"Elixir.Mobilizon.Repo.Migrations.Add-user-password-reset-fields" do
 
   def up do
     alter table(:users) do
-      add :reset_password_sent_at, :utc_datetime
-      add :reset_password_token, :string
+      add(:reset_password_sent_at, :utc_datetime)
+      add(:reset_password_token, :string)
     end
-    create unique_index(:users, [:reset_password_token], name: "index_unique_users_reset_password_token")
+
+    create(
+      unique_index(:users, [:reset_password_token],
+        name: "index_unique_users_reset_password_token"
+      )
+    )
   end
 
   def down do
     alter table(:users) do
-      remove :reset_password_sent_at
-      remove :reset_password_token
+      remove(:reset_password_sent_at)
+      remove(:reset_password_token)
     end
   end
 end