* updating all variables/methods containing Referers
 * RENAMING custom segments definition, and custom scheduled reports definition, so that when they load "Referers" segment/report it still works as expected
 * RENAMING old archived data so that archived blobs are called Referrers
  * Reverting part of 0deb2bbb
  * Update integration tests generating PDF+HTML with images on my dev box (GD 2.1 and PHP 5.5)

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

Refs #4059 Work in progress: Conversion to use Namespaces: Period*, Metrics, Segment, SegmentExpression, PluginsManager.
Removed some deprecated code.

Converting Piwik core source files, PHP, JS, TPL, CSS

More info: http://piwik.org/participate/coding-standards/

Refs #2908, refactored tests so database setup (adding sites, tracking visits) are separated from API tests. Put setup code into fixtures and reused code as much as possible.

refs #3227 removed class inheritance as that causes problems in some tests. improved and fixed some tests. now even more tests are running

git-svn-id: http://dev.piwik.org/svn/trunk@6676 59fd770c-687e-43c8-a1e3-f5a4ff64c105

while setup (atm bulk tracking doesn't work)


git-svn-id: http://dev.piwik.org/svn/trunk@6645 59fd770c-687e-43c8-a1e3-f5a4ff64c105

refs #3227 refactored integration tests to setup database and tracking only once per class; that should speed up the tests a bit

git-svn-id: http://dev.piwik.org/svn/trunk@6626 59fd770c-687e-43c8-a1e3-f5a4ff64c105

git-svn-id: http://dev.piwik.org/svn/trunk@6597 59fd770c-687e-43c8-a1e3-f5a4ff64c105