`<input>` and `<select>` sizing update. Better code snippets on mobile in docs. Twerk callouts and fix an unstyled one

BS3 commits e440ff4b3f872af175873283899cb40f50b8010f,
6cce56061f3c87826bb3217c9c21d58a2de2ab5c,
8ab77191ceec9648e47dbe764d876c536c9e6ec2
`<input>` and `<select>` sizing update. Variables reorganization and breadcrumbs update

BS3 commits e440ff4b3f872af175873283899cb40f50b8010f,
4b0fa356f3c00c850ec56815f8a8e07eb927c960
update links to bower

BS3 commit c2d3dad15b955146af832ccbb67dd640f9a2544f
Clean up tooltip's trigger description in the docs. update carousel captions

BS3 commits 3e8b3a246a3a7142f969ade63bbe21948085f4f2,
b6238c5f200821ebd564f36ff3882218e6093199
`<input>` and `<select>` sizing update. typo fixed: highligted source code of second radio button was missing. Update Normalize.css URL to new Github.io domain

BS3 commits e440ff4b3f872af175873283899cb40f50b8010f,
416fd9d19b9f3f302bcf4479a202b041ff621a1b,
6952d655f4e48daee1b2f13ee40fe076d1383b23
fix typo / doc components.html responsive menu dropdowns now have ref to .dropdown-header instead of .nav-header

BS3 commit bbe0d0d87460cf99262c8fec1e8e9bca69258aec
cleanup whitespace organize variables
cleanuup breadcrumb
bring up to date with BS3