Use scrollTop instead of colliderTop which uses the elements
offset().top, as the offset top does not account for padding.

This issue can be replicated by using a navbar-fixed-top and applying
relevant padding to the body. (A navbar-static-top with no padding on
the body does not encounter this issue)

Fixes #15078
Closes #15154 by merging it

Fixes #15131.

Fixes #15084.

Fixes #14916.

Resolves #14919.

Fixes #14923.

Fixes #14462.
Closes #14463 by merging it.

Fixes #13636.

Fixes #14851

This would only work with transitions but since we disable them for unit tests, this delivers unreliably results.

Fixes #14375.
Closes #14519 by merging it.

Fixes #14167.
Closes #14189 by merging it.

Closes #13563 by merging it.

Added support for `aria-expanded` toggling via JavaScript. Added
`aria-controls`, `aria-expanded`, `aria-labelledby` to tabs docs.

Added `aria-expanded` unit test for the tabs plugin.

See also #13554.

Closes #14154 by merging it.

Closes #14772.

Fixes #14756.
Closes #14767.

also includes tiny fix/clarification to two existing unit tests for the
.active class, adding data-toggle=“button” explicitly to the tested
buttons

Closes #14819.

Fixes #14844.
Closes #14845.