Chart category values should plot in ascending order

[PromiseFru]

For category months, values should start from January to December respectively. Month orders shouldn't be mixed up. e.g data contains months August, December, and February. Chart should plot data in the order February, August, December

[PromiseFru]

@Vanessa-Kris this doesn't work for chrome browser.

[Vanessa-Kris]

fixed.