Added rel-me to external links on profile

Rel-me is a widely used Microformat that consolidates identities across many different social networks which allows for interesting use cases like Google's social search results. Supported by Twitter, Google and many others. More info at: http://microformats.org/wiki/identity-consolidation
Merge pull request #1048 from voxpelli/patch-1

Added rel-me to external links on profile