move data attributes callout into data attributes doc subsection
JS docs: add Options, Methods, Events subsections to nav sidebar
navbar callouts cleanup

Move all callouts to be adjacent to each other
Combine JS-related callouts into a single callout
Fixed a typo in Sign-in page example

Fixed a typo in Sign-in page example
http://getbootstrap.com/examples/signin/
Merge pull request #15095 from gitaeks/master

Fixed a typo in Sign-in page example
Update npm-shrinkwrap.
grunt
bump version to v3.3.1
Merge pull request #15094 from twbs/js-navs

JS docs: add Options, Methods, Events subsections to nav sidebar
Merge pull request #15089 from twbs/data-attrib-callout

move data attributes callout into data attributes doc subsection
add link to MDN docs regarding iOS Safari element clickability
Merge pull request #15110 from twbs/ios-clickability

add link to MDN docs regarding iOS Safari element clickability
Fix .form-inline docs example

Make sample code match live example
Move <label> out of .input-group into .form-group instead
Change field from Email to Username to make it less redundant, slightly more realistic
Add <label> for Username field for consistency
Fixes #15118
Merge pull request #15120 from twbs/fix-forms-doc

Fix .form-inline docs example
Use a 40x40 image for the `navbar` brand image example.

Saves 3.4KB.
give all docs callouts IDs