Never remove media attribute on link tags
Only display media if it is meaningful
/assets/css/less/ -> /assets/less/
/assets/css/less/ -> /assets/less/
Update CHANGELOG
Add roots_display_sidebar filter

Add filter to sidebar display to have the ability to change when it is displayed in child themes and other circumstances.

https://github.com/retlehs/roots/issues/767
Merge pull request #763 from louisremi/preserve_media

Only display media if it is meaningful
Removed extra space before apply filters
Merge pull request #771 from gruvii/patch-1

Add roots_display_sidebar filter
Merge remote-tracking branch 'upstream/master'

Conflicts:
	assets/less/accordion.less
	assets/less/alerts.less
	assets/less/bootstrap.less
	assets/less/breadcrumbs.less
	assets/less/button-groups.less
	assets/less/buttons.less
	assets/less/carousel.less
	assets/less/close.less
	assets/less/code.less
	assets/less/component-animations.less
	assets/less/dropdowns.less
	assets/less/forms.less
	assets/less/grid.less
	assets/less/hero-unit.less
	assets/less/labels-badges.less
	assets/less/layouts.less
	assets/less/media.less
	assets/less/mixins.less
	assets/less/modals.less
	assets/less/navbar.less
	assets/less/navs.less
	assets/less/pager.less
	assets/less/pagination.less
	assets/less/popovers.less
	assets/less/progress-bars.less
	assets/less/reset.less
	assets/less/responsive-1200px-min.less
	assets/less/responsive-767px-max.less
	assets/less/responsive-768px-979px.less
	assets/less/responsive-navbar.less
	assets/less/responsive-utilities.less
	assets/less/responsive.less
	assets/less/scaffolding.less
	assets/less/sprites.less
	assets/less/tables.less
	assets/less/thumbnails.less
	assets/less/tooltip.less
	assets/less/type.less
	assets/less/utilities.less
	assets/less/variables.less
	assets/less/wells.less
	doc/usage.md