Twenty Fourteen: remove unneeded sidebar file. Props iamtakashi, see #25565.


git-svn-id: https://develop.svn.wordpress.org/trunk@25766 602fd350-edb4-49c9-b593-d223f7449a82
Update the basic browser detection to detect IE11. Fixes #25562.

git-svn-id: https://develop.svn.wordpress.org/trunk@25767 602fd350-edb4-49c9-b593-d223f7449a82