#1255: Remove whole 'Log', 'Utils', 'Db' class - completely useless and not used much. As side effect, #1255, has been solved.
report/Db.php|Log.php|Utils.php: deleted - not necessary anymore
Link.php, Report.php: Remove references to deleted classes. Adjusted one call to db->sql().

formEditor.sql: Added ':S0' to make FormEditor more robust - no error message in case formId can't be resolved, but still wrong behaviour.
Constants.php: Prepend '_' to SIP_MAKE_URLPARAM_UNIQ
Evaluate.php: phpstorm shows that 'getDebug()' is not used anywhere - commented.

delete.php, Delete.php: reformat
Link.php: typo

CODING.md: update docs for situation 'new record already saved'.
FillStoreForm.php: In case of form load with r=0, the submitted form element names are does not contain the effective record id - workaround implemented.
Session.php: refactored clear(), create unsetItem().
Sip.php: new buildParamStringFromArray(), updateSipToSession().
Store.php: For r=0 SIPs always add a uniqe parameter.
AbstractBuildForm.php: modified message for subrecords on new record.
QuickFormQuery.php: create unique SIP on form load.

Sip.php, Constants.php: define constant

Delete.php: fixed typo.

.gitignore: added qfq*.zip to ignore. The '*' is important in case the extension are generated with the version number included in the filename.

UsersManual/Index.rst: fixed some typos, replace sanatize class enumeration against table.

Makefile: `make archive` now generates again an extention which can be installed in T3 6.2 and 7.6. The problem was that the zip filename has to be equal to the extension name.

AbstractBuildForm.php, BuildFormBootstrap.php: Implemented alternative button at the bottom of the form.

mockup/second.html: Added standard 'Submit'-button on the bottom of the form. This is an alternative against the regular 'Check'-Button on the top right of the form.

QuickFormQuery.php, FormAction.php: implemented FormElement 'sendmail'
Report.php: Update column 'sendmail'
Sendmail.php: Update class to send mailand to log them in table mailLog.
AbstractBuildForm.php: refacxtured columnname 'value' to be used via constatn FE_VALUE.
formEditor.sql: renamed FE.typ 'sendmail' to camel hook 'sendMail'. Changed FormeElement.mode from 'select' to 'radio'. Added empty table 'mailLog'.