[BUGFIX] frontend editing does not fit to assigned user

Fixed isAllowedToEdit() Function

related: #63796
[BUGFIX] Export Exclude Fields

ViewHelper added, HTML-Templates adjusted, Small change in SASS and CSS

related: #63933
Merge branch 'develop' into feature/63933_export_enable_fields
Merge branch 'feature/63796_pi2_edit' into develop