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BS3 commits: 5796b56d9665ed84b6c6635c7ceb7d68a068003c
fix 12708 by updating class names in the docs JS

BS3 commits: 40142bdc5197b69f26e4d8ea3e30cd4fcf0d7cdb
avoid using .bs-* in example, & improve style

BS3 commits: dff122f7f0733f653d6845f7338b55388cd982f9
Use .bs-example-* instead of .bs-* in examples in docs

BS3 commits: f6d029f6abf0ae892a54c18bc283e0ef33ef430d
Remove trailing space.

BS3 commits: 55e6d4b9b567d2682cf3504f638892a0cb81c374
Fix scrollspy typo in docs.css

BS3 commits: e879127e318013f24c62c746c3ee3301057ffe8a