Added default testsuite into phpunit.xml
Fixed test suite. It wrote system modules in the activeModules section from the config.php as well, which is wrong.
Clear the cache after installing/activating a module for this module
Updated propel version in composer.json
Removed invalid cache keys in admin/config.json
Adjusted the default kryn installation id in the test suite.
Moved the call of `setupPageRoutes` inside `Kryn::handleRequest`. Renamed core events from `.` to `/`.
Implemented Core\Object::getModule() and Core\Object::getObjectPk. Fixed Core\Object::patch
Added `patch` method signature.