proper dropup caret colors

BS3 commit 06e6da09182f15f6eec6eaa68cb5e6c2af249a04
fixes 9600

BS3 commit 3a7ddae39e5e7b75651c22d0ce95a473d87aba2f
add clearfix mention to another grid example and clear up examples

BS3 commit 49e95f2bcfd71e12b0c3d45c6019482288cbebd9
delete comments

BS3 commit 4b350f8b79710d388ff8c711fba7a877812a6c1e
more fixes for 9513

BS3 commit 5f311790b9a71645759c956d96df1de93cd43b66
drop legend from docs example per 9626

BS3 commit 33edb95b9862ef0c0edea73ca931fcbbeb1b5b6d