Fixes #7213 Collapse plugin does not correctly set the "collapsed" class on accordion heading links
add offcanvas layout example based on bradfrost/this-is-responsive
Merge remote-tracking branch 'bootstrap/3.0.0-wip' into 3.0.0-wip

Conflicts:
	js/tests/unit/bootstrap-collapse.js
add offcanvas layout example based on bradfrost/this-is-responsive
Merge branch 'offcanvas-example' of github.com:trumbitta/bootstrap into offcanvas-example
Fixed mixin btn-pseudo-state background for [disabled] buttons
Merge remote-tracking branch 'bootstrap/3.0.0-wip' into 3.0.0-wip

Conflicts:
	js/bootstrap-collapse.js
fixes #8062: correct link to editorconfig website
fixes #8066: add missing % functions to grid less code
prep for less 1.4 with double parens in functions
restore .col-*-12 classes for now
nuke the .col
fix docs highlighting of grid
reverse order of grid column examples for dual grid section
Update css.html

Missing word "in" in "Someone famous in Source Title"
Set validation states also for addons
Another grid update

* Update docs to include table of grid levels and behaviors
* Change from .col-md to .col-sm to match existing size variables we use elsewhere
* Keep .col-lg as-is though for simplicity as we won't likely add a fourth level of the grid
* Combine responsive .container breakpoints with grid breakpoints in grid.less
* Other misc docs updates
add new grid subnav link
Merge pull request #8097 from burnsra/3.0.0-wip-addons

Set validation states also for addons
Merge pull request #8080 from mladenplavsic/patch-2

Update css.html