Bug 35813: (follow-up) Correct dialog class and clean up whitespace

Bug 35813: (follow-up) Correct dialog class and clean up whitespace

This patch changes the class of the success message from "success"
(which is a Bootstrap class) to "message" which is the class we use
elsewhere in Koha for this kind of informational message.

The patch adds the same dialog markup to labeledMARCdetail.tt.

The patch also trims trailing whitespace from place_booking_modal.js

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>