Moved extensions from visuals to analysis

Signed-off-by: Dominik Schadow <dominikschadow@googlemail.com>
Extension from visuals to analysis

Signed-off-by: Dominik Schadow <dominikschadow@googlemail.com>
Moved Viterbi from visual to analysis

Signed-off-by: Dominik Schadow <dominikschadow@googlemail.com>