Squashed commit of the following: patch-del-button-on-edit-form

commit bd79daf4
Author: Herman van Rink <rink@initfour.nl>
Date:   Sun Jan 23 20:28:48 2022 +0100

    Add show_delete_on_forms_txt to language files

commit f724a5ac
Author: Herman van Rink <rink@initfour.nl>
Date:   Sun Jan 23 17:02:12 2022 +0100

    move csrf_token code to match the 3 other new uses

commit 21bfe173
Author: Herman van Rink <rink@initfour.nl>
Date:   Sun Jan 23 16:40:29 2022 +0100

    Add show_delete_on_forms check to the other 3 new delete buttons

commit 246da684
Author: Herman van Rink <rink@initfour.nl>
Date:   Sun Jan 23 16:30:45 2022 +0100

    Change new var show_delete_on_forms to default n

commit 6249c9d6
Merge: 1678f932 19b24c63
Author: Herman van Rink <rink@initfour.nl>
Date:   Mon Nov 22 15:44:45 2021 +0100

    Merge remote-tracking branch 'origin/develop' into patch-del-button-on-edit-form

commit 1678f932
Author: Herman van Rink <rink@initfour.nl>
Date:   Tue Dec 29 11:55:40 2020 +0100

    Add global config option show_delete_on_forms

    setting the show_delete_on_forms template var needs a better place ... somewhere in interface/web/admin/form/system_config.tform.php ?
    But that also messed up the system config -> misc form ... name clash

commit 1337ca18
Author: Herman van Rink <rink@initfour.nl>
Date:   Tue Dec 22 14:52:40 2020 +0100

    Fix copy/paste error

commit 8c5ba07e
Author: Herman van Rink <rink@initfour.nl>
Date:   Thu Dec 10 04:02:02 2020 +0100

    Add delete button to some edit forms