Merge pull request #176 from ascott1/master

Remove the Beta label and optimize external link styling
Merge pull request #177 from ascott1/master

Vertically center the defined term header
remove element + class selectors
begin cleanup of sidebar.less
removing default link styles saves 13ms of CSS load
continue LESS refactoring
rever version of grunt-contrib-jasmine
duplicate css property
clean up margin and padding rules
all font sizes in ems
appendix nav cleanup
Merge remote-tracking branch 'upstream/master'
removed unused .css files