Update Social Feature UI

Updated social feature UI as requested in http://community.topcoder.com/tc?module=ProjectDetail&pj=30046781
- It looks now like (visible for registered user for the contest, before coding phase): https://i.imgur.com/2IjG7Uq.png https://i.imgur.com/InBpkWv.png https://i.imgur.com/Kq14Ewp.png
- In the 'Profile Overview' section: https://i.imgur.com/ULoENAg.png https://i.imgur.com/F1apkh4.png https://i.imgur.com/DTvnhL4.png