Implements #150

Adds an entry inside moderation section that allows moderators to check
pending tasks and mark them as solved.

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20180711224810) do
+ActiveRecord::Schema.define(version: 20180615102215) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -30,6 +30,18 @@ ActiveRecord::Schema.define(version: 20180711224810) do
   add_index "activities", ["actionable_id", "actionable_type"], name: "index_activities_on_actionable_id_and_actionable_type", using: :btree
   add_index "activities", ["user_id"], name: "index_activities_on_user_id", using: :btree
 
+  create_table "administrator_tasks", force: :cascade do |t|
+    t.integer  "source_id"
+    t.string   "source_type"
+    t.integer  "user_id"
+    t.datetime "executed_at"
+    t.datetime "created_at",  null: false
+    t.datetime "updated_at",  null: false
+  end
+
+  add_index "administrator_tasks", ["source_type", "source_id"], name: "index_administrator_tasks_on_source_type_and_source_id", using: :btree
+  add_index "administrator_tasks", ["user_id"], name: "index_administrator_tasks_on_user_id", using: :btree
+
   create_table "administrators", force: :cascade do |t|
     t.integer "user_id"
   end
@@ -1301,6 +1313,7 @@ ActiveRecord::Schema.define(version: 20180711224810) do
     t.datetime "updated_at", null: false
   end
 
+  add_foreign_key "administrator_tasks", "users"
   add_foreign_key "administrators", "users"
   add_foreign_key "annotations", "legacy_legislations"
   add_foreign_key "annotations", "users"