F17462: Improvement websocket server start/stop. Added documentation and manual to install websocket. refs #17462

Refs #17255 - If the record has been modified in the meantime, an alert will still be shown but the error will not be logged.

Refs #8702 - Added functionality to check if the record is already locked after loading the form. If the record is locked by another user, an alert is displayed with the message "The record has been locked by user 'user1' until 28.12.2023 10:16:51.".

B17397: Fixed dynamic update issue. correct recordId is not stored in typo3 store. Only in sip and record store. refs #17397

Refs #4413 - Additional check while saving if js-required-check is bypassed/skipped. Checks if child FE has required fieldset as parent FE, then saving is not possible.