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.

Fixed. Problem was a comparison on equal value  AND equal type: '==='. Bug happened (probably) only for numeric items.

Implemented for QFQ session. The T3 FE session still survive.

Manual.rst: describe new special column names.
Report.php: implement new column types.

Manual.rst: Extend documentation with various anker for FormEditor links. Also added some missing explanations: Required Parameter, Forward.

Artifactory builds fails at chromedriver - removed comment line - there are no comment signs in JSON.