New logic requires not to complain about missing lock during release.

Neu jeder abgelaufene Lock geloescht. Damit ist ein 'Extend' nicht mehr wirklich machbar.

Feature 4281

See merge request !22

AbstractBuildForm.php: code cleanup

AbstractBuildForm.php: code cleanup

AbstractBuildForm.php: placeholder

Lock Release now sent asynchronous. Does not work on Chrome when synchron. Still needs changes on Server side to work.

Added some padding to the alert window, removed the rounded edges, removed borders except the one at the bottom.

Changing buttons for the dirty Events depending on status, no an ignore option should be displayed for the user.

Check if Record is already exclusive locked. If yes, show Form in readonly mode.

Manual.rst: how to use the multi language forms.
DatabaseUpdateData.php: Update DB with new language fields.
HelperFormElement.php: modify explodeParameter() to not check already existing definitions.
QuickFormQuery.php: new setLanguage().

Manual.rst: Update Manual on how to use escape.
KeyValueStringParser.php: Detect if the exepensive preg_split is necessary. Implement explodeEscape().