CON-Venus breakpoint adjustment for ad skins

Changed large breakpoint to fix width of adskins on all large displays.

```$breakpoint-upper = $large-content-width + 2 * $ad-skin-width; // 1156px + 2 * 170px;```
Long story short: We'regoing to use jQuery 2.1 in Venus.

We try write some modules (especially those which could be reused in mercury) without jQuery.