Renamed track() to trackAction()
Added method CM_Service_Tracking_ClientInterface::trackPageView()

- Renamed method in CMService_GoogleAnalytics_Client
- Implemented in CMService_KissMetrics_Client and used in CM_Frontend_GlobalResponse
- Proxied to all tracking services in CM_Service_Trackings
Adjusted methods visibility in CMService_KissMetrics_Client

- Only kept interface methods public
Passed environment to CM_Service_Tracking_ClientInterface::getHtml()

- Adjusted methods visibility in CMService_GoogleAnalytics_Client
- Removed get/setSite in CMService_GoogleAnalytics_Client
Tracked page views at the Page level with KISSmetrics

- Moved tracking from layout to page/embedded page
Renamed "Pageview" to "PageView" in CMService_GoogleAnalytics_Client