Safari handles <fieldset disabled> just fine; fixes #8698

This makes me wonder whether recent IE might actually support this too.
If not, your move IE Team.
fix #8701: IE 10+ supports <fieldset disabled>

*golf clap*
Fix wording in 'hidden on...' to be in line with 3.0 wording.
fixes #8714: correct stacked pills nav
Merge pull request #8712 from claydiffrient/3.0.0-wip

Fix wording in 'hidden on...' to be in line with 3.0 wording.
Merge branch '3.0.0-wip' of github.com:twbs/bootstrap into 3.0.0-wip
Javascript - tooltips directions - easier visualization

Changed the order of the visualization. It is not the css order, however it is easier to see the tooltips
docs.css: Remove border-color that's missing a value

/cc @mdo to fix this properly later
/cc @rcotrina94 from e1bb94c38370fd2542415557c660d0804d4f42b1
Merge pull request #8730 from eluttner/3.0.0-wip

Javascript - tooltips directions - easier visualization
add responsive images section to docs (fixes #8734)
Merge branch '3.0.0-wip' of github.com:twbs/bootstrap into 3.0.0-wip
add commas in a couple places
expand out IE for consistency w/ the rest of the page
Merge pull request #8735 from twbs/docs-edits

minor CSS docs edits
apply <code> in a few places
Merge pull request #8736 from twbs/css-docs-code

CSS docs page: apply <code> in a few places
fixes #8703
Merge branch '3.0.0-wip' of github.com:twitter/bootstrap into 3.0.0-wip
CSS docs page: Use simpler HTML5 style for `multiple` boolean attribute of <select>
expand grid system options table to include column widths, gutter widths, large desktop media query, and container widths (fixes #8733)