F5458 Error Log Unique Identifier: Exception message might be an ordinary string or a JSON encoded array.

Bug #5890 config.qfq.ini: migrate LDAP credentials too. Extend T3 internal qfq config with 30 'custom'-vars. This replaces the old custom vars in config.qfq.ini

Bug #5890 config.qfq.ini is public readable. Renamed file to config.qfq.php. Implement a basic migration assistant to copy DB credentials to new config.qfq.php. All other values have to be copied to extmanager/qfq-configuration manually.

F6100 Url Forward Auto: Update Manual.rst. The F.parameter.saveAndClose has been removed again. Mode 'close' can be assigned statically or dynamic.

Manual.rst: Best practice default values.

Manual.rst: usage of drag and drop.

DragAndDrop.php, QuickFormQuery.php: bug fixes
FillStoreForm.php: no FE on a Form now ok - necessary for dnd sort forms.

Html2Pdf.php: remove check if wkhtmltopdf is executable - without the check, it's possible to specify variables, like LD_LIBRARY_PATH, in front of the executable. The latest development version of wkhtmltopdf needs specific libssl and libcrypt libs.
Manual.rst: add a note the the latest wkhtmltopdf can be requested from the QFQ team.

New Version naming scheme: <yy>.<mm>.<index> - e.g.: 18.04.1
ext_tables.php: path to icon fixed

Manual.rst: New check list. Updates on missing config entries. Details for record locking. More precise extraButtonInfo explanation.
config.qfq.example.ini: small updates to explanations.
ext_conf_template.txt: First version of extension manager configuration setup. Not functional.