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
Merge pull request #6431 from piwik/5940_testRenamingFramework

Moved test files into a subfolder framework