Added Medias code and documentation

Added media.less and edited bootstrap.less and responsive.less to manage media components.

Added a section to the documentation (Media, in components.html) outlining how Medias work. Edited bootstrap.css and bootstrap-responsive.css to add the code for the demos

Signed-off-by: Giuliano Velli <wpbrains@giusi.org>
Added Medias code and documentation

Fix for Issue #1711

Added media.less and edited bootstrap.less and responsive.less to
manage media components.

Added a section to the documentation (Media, in components.html) outlining how Medias work. Edited bootstrap.css and bootstrap-responsive.css to add the code for the demos

Signed-off-by: Giuliano Velli <wpbrains@giusi.org>
Merge branch 'media-component' of github.com:wpbrains/bootstrap into media-component

Conflicts:
	docs/components.html

Signed-off-by: Giuliano Velli <wpbrains@giusi.org>
Changed box-shadow mixin to accept infinite, comma separated, shadows
No longer need to write box-shadows in full when using lighten or other functions
Do not need to write box-shadow in full
Unescaped box-shadows to take advantage of new box-shadow mixin
Fix key events with Chrome + jQuery 1.8.0
Merge remote-tracking branch 'origin/2.1.0-wip' into 2.1.1-wip
Added 'clean' directive to the make file.
fixing translation text
gh-pages generated
fixes #4889: btn-link disabled styles
fixes #4824: scope table grid sizes to .table instead of table
fixes #4896: reflect media query order in docs
fixes #4901: attribute typo and reran make
fixes #4869: typo in getting started
fixes #4910: use @baseLineHeight * 1.5 for .lead font-size
fixes #4902: proper accordion html example
fixes #4922: use basefontsize for realz on .lead