Dropped extension/Documentation/_make/build.

Added QfqNS.Element.getElement() function. Elements can now be set readonly/disabled. Renamed QfqNS.Element.Input to QfqNS.Element.Text.

Constants, Store: added TYPO3_PAGE_TYPE to STORE_TYPO3
AbstractBuildForm: recode to use global $showDebugInfo. IMplemented deriveNewRecrdUrlFromExistingSip(). Added parameter $toolTip to createFormLink(). Rewrap Editlink
BuildFormBootstrap: recode buildButton().
QuickFormQuery: code to set session lifetime disabled: useless

BuildFormBootstrap: Top Button row moved on the same line as Title. Title will be dissappear on 'Extra Small Devices' (<768px). Class 'pull-right' for Button group removed. Some phpdoc created.

AbstractBuildForm, BuildFormBootstrap: implemented delete record for subrecords.
formEditor.sql: show fewer columns in subrecords

UsersManual/Index.rst: added Form.showButton
Support: added findInSet()
AbstractBuildForm: added createDeleteUrl(), prepareSubrecord(), getFormTable(). Rewrote buildSubrecord(): added 'delete' link, rearranged 'new' link. 'ShowDebugInfo' enhanced.
BuildFormBootstrap: rewrote BuildButton() to switch New/Delete Button on or off. Show debugInfo as tooltip.
Constants: New Subrecord contants.
formEditor.sql: added Form.showButton. Adjusted records

formEditor.sql: fixed typo
qfq-bs.css.less: added BS adjustments to render Checkboxes smoothly.

formEditor.sql: added column FormElement.subrecordOption. removed columne FormElement.debug. Rearranged code to be more easieble expandeble. Fixed typo in 'maxLength'

Save: handle CheckBox Multi values correctly

Store, Constants, Database, QuickformQuery, AbstratDatabase, StoreTest: renamed several config.ini variables to use the '_'.