Manual.rst: add documentation for record locking
DatabaseUpdateData.php: Add new column 'dirtyMode'
Dirty.php, Config.php, formEditor.sql: remove dirtyMode=readonly. Rename 'timeout' to 'exclusive' and 'overwrite' to 'advisory'.

Add Message if dirtRecord is missing.

Fixed some 'unknown index' issues - deny save in a first version works.

First version for save - not working now.
Manual.rst: document config var SYSTEM_DIRTY_RECORD_TIMEOUT_SECONDS.
QuickFormQuery.php, Dirty.php: extend to support QFQ/save().
Client.php: fixed broken PHP Unit test
Config.php: set default for dirtyRecordTimeout.
BuildFormBootstrap.php: No dirtyUrl if dirtyMode=none.
formEditor.sql: extend definition to Form.dirtyMode, new table 'Dirty'
Fixed several unit tests for new tables.

typeahead.php: An exception catched in typeahead.php has been assigned as array element, instead of a whole array. Fixed.

First implementation on server side: only tag as dirty, no check during save().
dirty.php, Dirty.php, Client.php: new
Store.php: refactored fillStoreClient() to use an dedicated class.
BuildFormBootstrap.php: add hook for dirty.php

Sanitize.php, FillStoreForm.php,  Store.php, Manual.rst: Corrections. Replace 'sanatize' against 'sanitize'.

Specify content disposition header filename in '"'. Remove none alnum chars from filename.
Sanitize.php: update doc
Download.php: Implement filename to be enclosed by ". Sanatize filename.
SanitizeTest.php: unittest for safeFilename().

Feature #3985 / FormEditor: In dropdown of 'feIdContainer' show, number of already assigned child elements (per container, one level)
Implemented

Revert "DatabaseUpdateData.php, formEditor.sql: column 'created' get's now the create timestamp by default."

This reverts commit 60cc10b2.

OnlineRecruiting.rst: Started doc for proof of example.

For any 'SELECT .. AS _link' a new token 'G:<glyphname>' is available.
Manual.rst: describe new token 'G:<glyphname>'
Link.php: add buildGlyph(), fix some initialization.