* First batch of \whitespace trim
Along with some quotation improvements to compensate for the new bytes.
* Undid experimental, new-age, gen-Z formatting
* daring to whitespace trim a placeholder macro
* switching to more consistent nesting of quotes
* Support specifying insertbefore position title as parameter
Closes: #6133
* Update insertbefore calls with new variable parameter syntax
See-also: 96b52606a (Support specifying insertbefore position title as parameter, 2022-02-21)
* fix draggable lists for firefox (sticky placeholders)
ff doesn't like whitespace and also those entities make problems
placeholder is styled in vanilla base
* tc-droppable-placeholder styles for tagged-draggable ...
and links-draggable lists
* make it beautiful
fixes#2970
Also fixes the nesting. If a template is defined for the list item, it should define the link as is done for **list-tagged-draggable**, i.e. the template defines any link widget it contains.