After #4869 albums are sent with captions in the first media.
In case we cancel the first media leaving the rest of the album
the caption will be lost unless we move it to the new "first" media.
Sum of percent values should never exceed 100%. If any two answers
received same amount of votes, they should show same percent values.
This way sum could be less than 100% (three answers, one vote each),
but this looks better than giving extra vote to some random answer.
