bug fix of ChartRangeFilterStateRange.java

[satoshieguchi]

ChartRangeFilterStateRange#getEndNumber() and ChartRangeFilterStateRange#getEndTimeOfDay() should return a double value or TimeOfDay object, respectively, but nothing will be returned due to lack of "return this.end;" statements.

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[satoshieguchi]

I have just signed the CLA.

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[satoshieguchi]

I have been working on new fixes for about two weeks.
In this process, since I messed my repository due to line endings between CR+LF and LF on my linux environment, I backed to the initial state of the repository, and made all line endings just LF, then applied my modifications to it again.
Please refer to the commit id of 60c617a to access my pull request.