Updates fiscal year options and default

Find the first and current fiscal years and generate the list of years from those two. Current fiscal year is found by checking whether we're past the fiscal year end date for this year.

This fixes two issues regarding the fiscal year options.
1. For deferred fiscal years an extra fiscal year would be in the list even though the year was before the first fiscal year.
2. For deferred fiscal years the current fiscal year would be missing from the list, if the current fiscal year would end next calendar year.