add webpack@2 as a direct devdep due to yoshi and storybook conflicts
add webpack@2 as a direct devdep due to yoshi and storybook conflicts

wix/wix-style-react,wix/wix-style-react,skyiea/wix-style-react,skyiea/wix-style-react,wix/wix-style-react,wix/wix-style-react,skyiea/wix-style-react