Removed unused code, misc corrections and corrected PHPDoc problems.

htdocs/accountancy/admin/fiscalyear.php

htdocs/accountancy/admin/fiscalyear_card.php

htdocs/accountancy/class/accountancysystem.class.php

htdocs/accountancy/class/accountingaccount.class.php

htdocs/accountancy/class/bookkeeping.class.php

htdocs/accountancy/class/html.formventilation.class.php

htdocs/accountancy/journal/bankjournal.php

htdocs/accountancy/journal/sellsjournal.php

htdocs/comm/action/class/ical.class.php

htdocs/core/lib/accounting.lib.php

htdocs/core/lib/fiscalyear.lib.php