Allow users to verify their Github handle

[michaelsena]

Can integrate a @mi-xu library for this probably?

[mi-xu]

The github and https identity linking dapp I prototyped a while back is here: https://github.com/mi-xu/ethense-linked-identity-dapp

It uses the legacy mnid and uport registry contract so establish and verify the links, so won't be directly useful for a muport-did implementation.

[michaelsena]

Closing this is an old duplicate