2 Fixes and 1 new google analytic option

FIX:
- Missing "$" in constant t3d_webanalytic.google_analytics.id
- register:HTTP_HOST was at false position. Needs to be a data object.

ADD:
- Option that collected datas for Google Analytics should be anomize the
ip of the client
(http://www.datenschutzbeauftragter-info.de/fachbeitraege/google-analytics-datenschutzkonform-einsetzen/)