refs #5940 moved files into a subfolder framework, added autoloader to remove duplicated code to load autoload.php and to be able to register more autoloaders (eg for test files) on demand. This I got read of many includes that had to be updated all the time and that had to be updated all the time when moving iles

refs #5940 we might stay backwards compatible this way for 2 months. moved some tests from unit to integration and explained when a test is a unit test, an integration test or a system test.

Get xhprof integration to work. Only setup xhprof once per php execution and correctly aggregate xhprof runs (xhprof aggregation will always normalize so we must aggregate ourselves).

  - moved all API URL generation logic & API response handling logic to separate classes
  - created ApiTestConfig class to hold API test options (and documentation for properties)
  - remove unnecessary IntegrationTestCase properties and methods (including apiNotToCall/apiToCall)
  - remove as many unnecessary API test options as possible (including abandonedCarts, hackDeleteRangeArchivesBefore)
  - rename checkRequestResponse to assertApiResponseHasNoError

Error was https://travis-ci.org/piwik/piwik/jobs/24163923

UserAgentParserEnhanced is now required and used from it's own composer package (piwik/device-detector); additionally Spyc library is required as composer package and removed from piwik source

Move SqlDump fixture from Bencharmks dir to Fixtures dir, fix bug in core/Updates.php, tweak test environment setup and update UI submodule.

Refs #4739, allow JavaScript screenshot tests to override Piwik behavior by storing values in tmp/ file, add hook so plugins can setup their own test environment, reset user password on test fixture setup.

Refs #4739, #4189, remove persist_fixture_data config option code, placed OmniFixture into a namespace, removed PHP screenshot testcase classes and added fixture for use w/ JavaScript screenshot tests.

- Rename *_BaseFixture to Fixture.
- Move DB setup code to Fixture and reuse code in DatabaseTestCase.
- Make IntegrationTestCase::$defaultApiNotToCall an instance var.

Refs #4189, added UI unit test base class and tests for ViewDataTable. Refactored capture.js to make new type of testing possible.

Error messages friendly to CLI output (no html, spaces displayed correctly...). Factoring out class CronArchive from archive.php.