Add and install delayed_job gem

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20170908101023) do
+ActiveRecord::Schema.define(version: 20170926083816) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -162,6 +162,21 @@ ActiveRecord::Schema.define(version: 20170908101023) do
     t.index ["dossier_id"], name: "index_commentaires_on_dossier_id", using: :btree
   end
 
+  create_table "delayed_jobs", force: :cascade do |t|
+    t.integer  "priority",   default: 0, null: false
+    t.integer  "attempts",   default: 0, null: false
+    t.text     "handler",                null: false
+    t.text     "last_error"
+    t.datetime "run_at"
+    t.datetime "locked_at"
+    t.datetime "failed_at"
+    t.string   "locked_by"
+    t.string   "queue"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+    t.index ["priority", "run_at"], name: "delayed_jobs_priority", using: :btree
+  end
+
   create_table "dossiers", force: :cascade do |t|
     t.boolean  "autorisation_donnees"
     t.integer  "procedure_id"