Add configuration for year suffix in the header

For Japanese, Chinese and Korean, the year in the header should be
followed by the year character.
Add configuration for having month after year

For Japanese, Chinese and Korean, the order of the header should be
year, then month.
Documentation for yearSuffix, showMonthAfterYear
Update CHANGELOG about new configuration options
Merge pull request #90 from bquorning/asian-languages-configuration

Calendar title configuration for Asian languages