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.

Added/removed blank lines in the docs for consitency

Update customizer libraries

Sorted various lines using atom/sort-lines

add role="button" to a couple more dummy-anchor btns

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Add min-height: 0% to .table-responsive; fixes #14837

Fixes #14844.
Closes #14845.

Removed double parentheses from expressions

Refs #13131.

Print style updates

Also, keep the html5 boilerplate link in the built CSS.

fixes #13816 Modal dialog closes when dragging and releasing mouse button outside dialog

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Change Twitter links to use `https`.

Update normalize.css to v3.0.2.