CHG: differ between old and legacy tracking
CHG: changed / improved some comments
CHG: refactored the tracking handler to capsule the usage of the adapters from the library and ensure, a usage without app context is possible. Although a unique way of tracking should be more possible with this in the future.
CHG: changed everything else to use the new handler
DEL: removed uncommented code
FIX: modman line concerning css dir
CHG: restructured the tracking
FIX. define config property
Merge branch 'tracking-refactor' into legacy-3.5
Merge branch 'legacy-3.5' into next
build version 3.5.5