update docs css to prevent misaligned buttons example

BS3 commit a5cb6c7a152d5b20a9ced4cbd5315dc2c03dbaf0
fixes 9616. consistent variation order, add .label-primary

BS3 commits da6a7827d25e8e6a8d5e143f8e76fb8842e7311a,
209d3af30188a6b426f0cf84d81b367b2f056e1b
restore bottom border on hover of nav tabs for proper display. consistent variation order, add .label-primary

BS3 commits 51f2c907e738a6dd531de36c52ddfc103f76b918,
209d3af30188a6b426f0cf84d81b367b2f056e1b
Change input type for the email input examples. Doc fixes related to 9523. consistent variation order, add .label-primary

BS3 commits b9052a74bbaef215761befe618375ea1a4476dfc,
18be4e880c0a3554363b572299c57612cb050efa,
209d3af30188a6b426f0cf84d81b367b2f056e1b
add documentaton on how to disable the responsiveness of BS3. update to include nav link and mo betta docs on that last commit

BS3 commits e550e113a03d66b13fdf1a352813e78eb27ad408,
4002ac7e6577ab7b7b3db9c4237a40a40b567360