refactoring partially
Merge branch 'line-lineChart/refactoring' into linePlusBarChart/refactoring
refactored partially
Merge branch 'historicalBar-historicalBarChart/refactoring' into linePlusBarChart/refactoring
linePlusBarChart
Merge branch 'historicalBar-historicalBarChart/refactoring' into linePlusBarChart/refactoring
Merge branch 'line-lineChart/refactoring' into linePlusBarChart/refactoring
Merge branch 'line-lineChart/refactoring' into linePlusBarChart/refactoring
Merge pull request #36 from kashesandr/linePlusBarChart/refactoring

refactoring partially