Inner navigation should be also controlled by slide timing

[pepelsbey]

Inner navigation should use its parent data-timing divided by number of .next elements as timing.

But the question is: should it be next_gap next_gap… or gap_next gap_next? In case with data-timing='"5" and 5 .next items each gap would 1 sec and in next_gap there will be no gap at the beginning or in gap_next at the end.

Maybe data-timing should be divided by .next+1 to kind of… wrap whole .next items to the same gaps?

Related to #17

[pepelsbey]

Kinda fixed now but in a different manner. @miripiruni for the rescue!

[pepelsbey]

Oops, wrong number.