Fixes #5178, enable STRICT_TRANS_TABLES in travis and fix remaining tests that do not pass w/ this mysql setting. Includes fixes to PrivacyManager plugin and fix for tracker when non-unicode site search keyword is stored in the DB (instead of storing the data as non-utf strings, we store the data as urlencoded if the keyword is not valid utf-8).

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.

refs #5940 put tests in correct folders, better testsuite names, some tests still fail and I cannot figure out why

refs #6116

Refs #5800, add namespaces to integration tests in root folder. Also add IntegrationTestCase to a namespace, re-add individual test @groups, move test groups to class level, and rename test files & class names so underscores are not used.

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

added possibility to get/create a tracker by using "Tracker = AnalyticsTracker.getTracker" instead of "Piwik.getTracker". Variable will be set only if no such variable is defined yet

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

Refs #472 PrivacyManager support for Custom Events, so that when old data is purged, it works as expected for purging Segments as well.

Refs #4202 removing functions Piwik_GetOption and SetOption. Now use: Option::get and Option::set and Option::delete

refs #4141

Added namespaces to functions.php files in the five plugins that had one
Work in progress

renaming Unzip to Uncompress,
Renaming Tracker/Referer to Tracker/Referrer,
and few more