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/ValidationAndPasswordsReset.spec.js

@@ -265,6 +265,10 @@ describe("Email Verification", () => {
         expect(error.message).toEqual('An appName, publicServerURL, and emailAdapter are required for password reset functionality.')
         done();
       });
+    })
+    .catch(error => {
+      fail(JSON.stringify(error));
+      done();
     });
   });
 
@@ -561,9 +565,8 @@ describe("Password Reset", () => {
 
             Parse.User.logIn("zxcv", "hello").then(function(user){
               let config = new Config('test');
-              config.database.adapter.adaptiveCollection('_User')
-              .then(coll => coll.find({ 'username': 'zxcv' }, { limit: 1 }))
-              .then((results) => {
+              config.database.adapter.find('_User', { fields: {} }, { 'username': 'zxcv' }, { limit: 1 })
+              .then(results => {
                 // _perishable_token should be unset after reset password
                 expect(results.length).toEqual(1);
                 expect(results[0]['_perishable_token']).toEqual(undefined);