new helpers getNonZeroValueFormat
new dir calculation scheme using logrithmic progression

--- works fine ---

todo: remove recemt calculation schemes
DividendsPerformanceView: some new sorters, ignore zero values on colP_Dividends12Expected, colQ_DividendIncreasingRate, colR_DivExpectedLongTerm
Add shares to account transactions to track dividends per share
(manually fetched from commit 2979501cbacbce4607eed23c2f447a6ee9592ff1)