[TASK] Replace confirm with a dialog when creating a new bookmark

Resolves: #68751
Releases: master
Change-Id: I4fa9c9be82581832356d1217885f0a2ba41a9aeb
Reviewed-on: http://review.typo3.org/42282


Reviewed-by: Daniel Goerz <ervaude@gmail.com>
Tested-by: Daniel Goerz <ervaude@gmail.com>
Reviewed-by: Susanne Moog <typo3@susannemoog.de>
Tested-by: Susanne Moog <typo3@susannemoog.de>