Modify Coherence migration because we have most of these fields alrea…

…dy. [#70]

phoenix/contraq/priv/repo/migrations/20180227052552_create_coherence_user.exs

@@ -1,27 +1,6 @@
 defmodule Contraq.Repo.Migrations.CreateCoherenceUser do
   use Ecto.Migration
   def change do
-    create table(:users) do
-
-      add :name, :string
-      add :email, :string
-      # trackable
-      add :sign_in_count, :integer, default: 0
-      add :current_sign_in_at, :utc_datetime
-      add :last_sign_in_at, :utc_datetime
-      add :current_sign_in_ip, :string
-      add :last_sign_in_ip, :string
-      # rememberable
-      add :remember_created_at, :utc_datetime
-      # recoverable
-      add :reset_password_token, :string
-      add :reset_password_sent_at, :utc_datetime
-      # authenticatable
-      add :password_hash, :string
-
-      timestamps()
-    end
-    create unique_index(:users, [:email])
-
+    rename table(:users), :encrypted_password, to: :password_hash
   end
 end