log only calls to privacy manager changes and also log when fixtures are executed to see whether it actually executes them in same order

this is a better solution to the previous committed fix. This solution works in all cases (even when not running tests) and makes it useable for other CacheFile classes as well. In addition it keeps the dependencies in the PersistenceCache class

does this fix the tests? just because the tracker cache gets deleted in the fixture performSetUp it does not update the cached static property of the persistentcache

this should fix the "MySQL server has gone away" error on Travis. It only occurred sometimes as the timeout on travis is only 180 (28800 is mysql standard)

Allow UI testing system to specify extra plugins to load and install when running UI tests for a plugin.

smarter install and update of columns which will automatically update the column in case the type changes making it super easy for developers, not sure if everything works already and need to xhprof it

started to handle changes to dimensions, for instance if a new dimension is added the platform should detect this and run an update script. also if a dimension suddenly handles new cases such as conversion it should automatically add a column to log_conversion after a user confirms. Have not tested update and/or installation yet

maybe this fixes the Mysql server has gone error? I think it does not really uninstall columns but adds them all the time.

When executing tests, check for non-core plugin that should be loaded by looking at test case class & current backtrace. (Removing need for enable_load_standalone_plugins_during_tests config option).

Piwik is a free/libre analytics platform. Refs #4455 GNU Package requirement to use free/libre instead of open source

(best practise is to test at least the minimum supported version)

Refs https://github.com/piwik/piwik/pull/300

Add new console command to setup fixture outside of a test so manual testing can be done w/ existing fixtures and so specific custom data can be added by creating a fixture. Includes slight refactor to Fixture.php.

Add config_override testing environment parameter that overrides INI config values, and make sure fixtures post testingenvironment hook so plugin test environment is enabled for fixtures.