Make custom max-width on row conform to Boostrap convention

Bootstrap break point for tablet portrait 768 keeps the row intact, so it's not appropriate to have off-canvas elements at that width. Custom off-canvas.css should be breakpoint 767px
Prevent X-scroll on small screens

html overflow-x must be hidden to prevent accidental x-scroll on small screens. This is more apparent with touch screens, where the user often gestures diagonally instead of a true vertical gesture.
Color-code the "Internet Explorer 8 and 9" features table
address #10343 more directly: add note on carousel transitions in IE8+9
make Glyphicons mainstream in Carousel examples
Merge pull request #10413 from twbs/carousel-transitions-no-fallback-note

address #10343 more directly: add note on carousel transitions in IE8+9
Color code IE8-9 table with text classes and Glyhpicons instead of table classes
Merge branch 'color-code-IE89-table'
Merge branch 'master' of github.com:twbs/bootstrap
dat grunt
Merge branch 'master' into carousel-glyphicons-mainstream

Conflicts:
	javascript.html
add .nav-list & .nav-header to removals section of migration guide; fixes #9139
Merge pull request #10419 from twbs/doc-that-nav-lists-are-gone

add .nav-list & .nav-header to removals section of migration guide
Fixes #10407: Add line-height to progress bar for proper text alignment within
Merge branch 'master' of github.com:twbs/bootstrap
Getting started docs - Migrating section: refactor some of the text for clarity and easy reading.Also removed some rogue tab characters in the source that I introduced in prior commits.
CSS docs - Grid section: two dots are missing before 'col-md-8'

Add the two missing docs
Merge pull request #10423 from hustlzp/master

CSS docs - Grid section: two dots are missing before 'col-md-8'
Fixed error in documentation in mixins.less
Merge pull request #10427 from liamzebedee/patch-1

Fixed error in documentation in mixins.less