F14995: Final version of search db. Extended inline edit report functions (editing header and subheader). Report file can be edited too. New added documentation. New SQL function QMARK(). refs #14995

Refs #12636. Add stored procedure. Add OnString::escapeSingleTickInHtml() incl. unit test. Next step: use  escapeSingleTickInHtml().

QIFEMPTY: detected empty for all - fixed. Not clear why the unit test not failed already. Unit tests checked again that they really work: they do!

New stored procedure: QDATE_FORMAT(timestamp). Return text in dd.mm.yyyy hh:mm format or '-' is timestamp is empty.

Fix undefined index. Refactor functions.sql to function.sql. Inplement constants for Version numbers.