Add idempotency (#6748)

* added idempotency router and middleware

* added idempotency rules for routes classes, functions, jobs, installaions, users

* fixed typo

* ignore requests without header

* removed unused var

* enabled feature only for MongoDB

* changed code comment

* fixed inconsistend storage adapter specification

* Trigger notification

* Travis CI trigger

* Travis CI trigger

* Travis CI trigger

* rebuilt option definitions

* fixed incorrect import path

* added new request ID header to allowed headers

* fixed typescript typos

* add new system class to spec helper

* fixed typescript typos

* re-added postgres conn parameter

* removed postgres conn parameter

* fixed incorrect schema for index creation

* temporarily disabling index creation to fix postgres issue

* temporarily disabling index creation to fix postgres issue

* temporarily disabling index creation to fix postgres issue

* temporarily disabling index creation to fix postgres issue

* temporarily disabling index creation to fix postgres issue

* temporarily disabling index creation to fix postgres issue

* temporarily disabling index creation to fix postgres issue

* trying to fix postgres issue

* fixed incorrect auth when writing to _Idempotency

* trying to fix postgres issue

* Travis CI trigger

* added test cases

* removed number grouping

* fixed test description

* trying to fix postgres issue

* added Github readme docs

* added change log

* refactored tests; fixed some typos

* fixed test case

* fixed default TTL value

* Travis CI Trigger

* Travis CI Trigger

* Travis CI Trigger

* added test case to increase coverage

* Trigger Travis CI

* changed configuration syntax to use regex; added test cases

* removed unused vars

* removed IdempotencyRouter

* Trigger Travis CI

* updated docs

* updated docs

* updated docs

* updated docs

* update docs

* Trigger Travis CI

* fixed coverage

* removed code comments

spec/ParseQuery.Aggregate.spec.js

@@ -1440,7 +1440,7 @@ describe('Parse.Query Aggregate testing', () => {
       ['location'],
       'geoIndex',
       false,
-      '2dsphere'
+      { indexType: '2dsphere' },
     );
     // Create objects
     const GeoObject = Parse.Object.extend('GeoObject');