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

Fixes #4878, re-introduce VisitFrequency Archiver in order to successfully combine pre-2.0 VisitFrequency data with new data.

Enable commented out tests in BackwardsCompatibility1XTest by executing update after sql dump is loaded.

Killing the Archiver from VisitFrequency. Nice! using VisitsSummary.get API instead, with a visitorType==returning segment
Fixing a 4 year old bug which I'm happy about!
Also removing an old hack in Archive.php

git-svn-id: http://dev.piwik.org/svn/trunk@7256 59fd770c-687e-43c8-a1e3-f5a4ff64c105

 * all integration tests generating requests to piwik now use cookies by default
 * added one test that does not use cookie


git-svn-id: http://dev.piwik.org/svn/trunk@3511 59fd770c-687e-43c8-a1e3-f5a4ff64c105

 * Example of a simple filter to apply to the datatable in the API method. Filters will automatically work on all dataTable are are easy to write /maintain

 * Fixing tests

git-svn-id: http://dev.piwik.org/svn/trunk@2595 59fd770c-687e-43c8-a1e3-f5a4ff64c105

 * now reporting Actions per visit 
 * reporting Average Visit duration instead of total visit duration
 * removed api getMaxActionsReturning() as it doesn't sound like a useful metric
 * udpated tests to test the new metrics 

git-svn-id: http://dev.piwik.org/svn/trunk@2494 59fd770c-687e-43c8-a1e3-f5a4ff64c105

Fixing bug in Archiving found with this new test suite (max_actions was incorrectly summed during archiving, rather than max() operation)
Updating expected file as naming convention changed in previous commit
Refs #1446


git-svn-id: http://dev.piwik.org/svn/trunk@2442 59fd770c-687e-43c8-a1e3-f5a4ff64c105

Also adding integration test suite in place.

 * Adding new mechanism to trigger known tracking requests, then call all API methods get* and compare XML to the previous 'expected' XML.
 * make sure overwritten config files are not read during tests. Use defaults from global.ini.php.
 * piwik.php Tracker allow calling script to force Datetime and user IP for a specific request. 
 * Wrote 3 main tests
  * wrong tracking requests should not return error and should not record anything 
  * standard one visitor, 2 visits, with page view, download, outlink and goal tracked
  * Added integration test as an example in the ExampleAPI plugin (pretty simple to add testing code)
TODO 
 * Finish PiwikTracker and show it in UI
 * Show how to use image based tracker in UI
 * Add more tests (multi periods and multi sites) in Main.test.php
 * Fix failing Config.test.php test (when ran via all_tests.php doesn't fail otherwise)

git-svn-id: http://dev.piwik.org/svn/trunk@2429 59fd770c-687e-43c8-a1e3-f5a4ff64c105