Manual.rst: description of new options for MAIL_LOG and Report/sendmail.
 sendEmail: added new perl script.
 Report.php: $mailarr renamed to $mailConfig. convertToken() updated.
 Sendmail.php: commented mb_send_mail(). New sendEmail().
 Config.php: new options MAIL_LOG.
 Store.php: Update SUSTEM_SEND_E_MAIL

Database.php: fix wrong error message.

Manual.rst: some short docs.
Support.php: add stripFirstCharIf()
Report.php: merge STORE_RECORD

DatabaseUpdateData.php: removed the DB update from last commit - not necessary.
Config.php: New default 'm'
Evaluate.php: Respect EscapeTypeDefault in form definition.
QuickFormQuery.php: Replace 'EscapeTypeDefault' in form defintion very early.

AbstractBuildForm.php: new function subrecordHead(). Replaced several hard coded subrecord column names against constants.

#4606 / _link: qualifier to render bootstrap button - implement token  'b:...' for link class. Manual is updated. Open: `pageX` should be recoded to use the new 'b:' instead of hardcoed behaviour to render a button.

Feature: Upload Button - wrapped with Bootstrap Button. New option 'fileButtonText' to specify a button text.

Feature #3752 / Pills auf mode|modeSql=hidden|readonly setzen - implemented during 'form load' (not dynamic update)