another rearrange

...-demo/src/main/java/com/xeiam/xchart/demo/XChartDemo.java

...n/java/com/xeiam/xchart/demo/charts/date/DateChart01.java

...n/java/com/xeiam/xchart/demo/charts/line/LineChart09.java

...rnal/chartpart/axistickcalculator/AxisTickCalculator.java

.../chartpart/axistickcalculator/DateAxisTickCalculator.java

.../internal/chartpart/axistickcalculator/DateFormatter.java

...hartpart/axistickcalculator/NumberAxisTickCalculator.java

...nternal/chartpart/axistickcalculator/NumberFormatter.java

...rt/src/main/java/com/xeiam/xchart/style/StyleManager.java

...c/test/java/com/xeiam/xchart/unit/ValueFormatterTest.java