ui: Specify handle for draggable dialogs

include/staff/dynamic-form.inc.php

include/staff/templates/advanced-search.tmpl.php

include/staff/templates/collaborators.tmpl.php

include/staff/templates/content-manage.tmpl.php

include/staff/templates/dynamic-field-config.tmpl.php

include/staff/templates/form-manage.tmpl.php

include/staff/templates/list-import.tmpl.php

include/staff/templates/list-item-properties.tmpl.php

include/staff/templates/org-delete.tmpl.php

include/staff/templates/org-lookup.tmpl.php

include/staff/templates/org-profile.tmpl.php

include/staff/templates/org.tmpl.php

include/staff/templates/sequence-manage.tmpl.php

include/staff/templates/task-assign.tmpl.php

include/staff/templates/task-delete.tmpl.php

include/staff/templates/task-edit.tmpl.php

include/staff/templates/task-status.tmpl.php

include/staff/templates/task-transfer.tmpl.php

include/staff/templates/task.tmpl.php

include/staff/templates/thread-email-headers.tmpl.php