Merge branch '21jumpst' into 2.1.0-wip

diff --cc docs/assets/css/bootstrap-responsive.css
Simple merge

diff --cc docs/assets/css/bootstrap.css
Simple merge

diff --cc docs/base-css.html
Simple merge

diff --cc docs/download.html
Simple merge

diff --cc docs/javascript.html
Simple merge

diff --cc less/type.less
Simple merge

diff --cc less/variables.less
Simple merge