Whitespace tweaks to CSS/JS.

See #5821

git-svn-id: https://buddypress.svn.wordpress.org/trunk@8952 cdf35c40-ae34-48e0-9cc9-0c9da1808c22
Grunt: update package.json with latest versions of libraries. Remove unused `grunt-phpunit`.

See #5821, props netweb

git-svn-id: https://buddypress.svn.wordpress.org/trunk@8953 cdf35c40-ae34-48e0-9cc9-0c9da1808c22