update grunt-html-validation output file ignores
quick fix for docs mention
Correct "Aligninment" -> "Alignment" typo.

Signed-off-by: Chris Lamb <chris@chris-lamb.co.uk>
Removing whitespaces
Add role="toolbar" to elements with .btn-toolbar.
Merge pull request #9918 from lamby/master

Correct "Aligninment" -> "Alignment" typo.
Merge pull request #9930 from tagliala/whitespaces-fix

Removed trailing whitespaces in responsive-utilities.less
fix #9924
fix #9917
CONTRIBUTING: reflect move away from *-wip branch style of development

Per http://blog.getbootstrap.com/2012/12/10/bootstrap-3-plans/ :
> * Drop the `*-wip` branch style of development.
point release download link to an actual release instead of `master`
links to a release instead of master, so rephrase description accordingly
master branch is no longer stationary, so don't imply otherwise
fix #9915
update copyright year
add variables for heading font sizes; fixes #9921
regenerate customizer's raw-files.js
add header font size vars to customizer page
rename @screen-XX to @screen-XX-min for clarity+unambiguity
Added fonts to "main" files

When using bower the "main" property is used to specify the files that should be consumed by applications including the package as a dependency.
Without including the fonts in this array the glyphicons do not work correctly as the relative font paths do not work after the "main" files are copied into my projects public dir using tools like https://github.com/yatskevich/grunt-bower-task

For now I have manually copied the fonts dir in the location needed for my project. But by accepting this pull request this will not be necessary for me or for other people that use bower.