Postgres adapter (#2012)

* Remove adaptiveCollection

* Remove an adaptiveCollection use

* Remove an adaptiveCollection

* make adaptiveCollection private

* Remove collection from mongoadapter

* Move schema collection usage into mongo adapter

* stop relying on mongo format for removing join tables

* reduce usage of schemaCollection

* remove uses of _collection

* Move CLP setting into mongo adapter

* remove all uses of schemaCollection

* make schemaCollection private

* remove transform from schemaCollection

* rename some stuff

* Tweak paramaters and stuff

* reorder some params

* reorder find() arguments

* finishsh touching up argument order

* Accept a database adapter as a parameter

* First passing test with postgres!

* Actually use the provided className

* index on unique-indexes: c454180 Revert "Log objects rather than JSON stringified objects (#1922)"

* Start dealing with test shittyness

* Make specific server config for tests async

* Fix email validation

* Fix broken cloud code

* Save callback to variable

* undo

* Fix tests

* Setup travis

* fix travis maybe

* try removing db user

* indentation?

* remove postgres version setting

* sudo maybe?

* use postgres username

* fix check for _PushStatus

* excludes

* remove db=mongo

* allow postgres to fail

* Fix allow failure

* postgres 9.4

* Remove mongo implementations and fix test

* Fix test leaving behind connections

spec/OAuth.spec.js

@@ -284,9 +284,9 @@ describe('OAuth', function() {
                "Expiration should be cleared");
             // make sure the auth data is properly deleted
             var config = new Config(Parse.applicationId);
-            config.database.adapter.find('_User', { objectId: model.id }, {
+            config.database.adapter.find('_User', {
               fields: Object.assign({}, defaultColumns._Default, defaultColumns._Installation),
-            }, {})
+            }, { objectId: model.id }, {})
             .then(res => {
               expect(res.length).toBe(1);
               expect(res[0]._auth_data_myoauth).toBeUndefined();