Fix some whitespace issues with media queries

Squashed commit of the following:

commit bc286779cbfbab145da2570f354786e784ca55e3
Author: Iaroslav Porodko <iarsolav.porodko@bazaarvoice.com>
Date:   Thu Feb 21 14:43:43 2013 -0600

    merging changes from main repo

commit 45b27e10b5334698ee66650f575cd649c1b0bdf3
Author: Iaroslav Porodko <iarsolav.porodko@bazaarvoice.com>
Date:   Thu Feb 21 14:36:23 2013 -0600

    remove unnecessary import

commit 06b02e3e0882b5c923ca74f60b1b0ef3448db663
Author: Iaroslav Porodko <iarsolav.porodko@bazaarvoice.com>
Date:   Thu Feb 21 14:30:54 2013 -0600

    remove commented code

commit 8db45c464149126d8376617f807fc3e17c41d31c
Author: Iaroslav Porodko <iarsolav.porodko@bazaarvoice.com>
Date:   Thu Feb 21 14:21:30 2013 -0600

    fixes for missing whitespaces
Updated changelog