[FEATURE] Improve livesearch results

* uid and pid are displayed as tooltip in livesearch results
* returnUrl set so closing edit mask won't lead to dummy.php

Resolves: #35358
Releases: 6.2
Change-Id: I9c31cb547c9e9eb82f35a614d6977fca87f339d6
Reviewed-on: https://review.typo3.org/20992
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters