Added attributes "tag" and "type" to "adp:toggle_button" to increase applicability
- Bootstrap3 is picky and allows just "<a>" tags for the navigation
buttons, whereas Bootstrap4 and 5 would also allow <button> with
appropriate classes for nav-items and nav-links.
So, use <... tag="a"... > for use of nav buttons with potential
Dropdowns with Bootstrap 3.
- Potential attributes for this tag are:
- "tag" (default "button")
- "toggle"
- "target"
- "type" (default "button")
The attribute "type" is just valid when "tag" is "button".
- Many thanks to Monika Andergassen for the suggestion.
