thumbnails

[2016-12-18 16:47:46] Mark Otto made changes to /docs/assets/css/bootstrap-responsive.css, /docs/assets/css/bootstrap.css, /docs/base-css.html, /docs/components.html, /docs/getting-started.html, /docs/index.html, /docs/scaffolding.html, /docs/templates/pages/base-css.mustache, /docs/templates/pages/components.mustache, /docs/templates/pages/getting-started.mustache, /docs/templates/pages/index.mustache, /docs/templates/pages/scaffolding.mustache, /less/responsive-1200px-min.less, /less/responsive-767px-max.less, /less/thumbnails.less: thumbnails cleanup: no more UL or LI elements needed, instead just use standard grid markup link