Add user/:id/coin_transactions route. Display all coin transactions in the private profile.
Merge pull request #74 from paulld/user_bets_route

Add user/:id/coin_transactions route. Display all coin transactions in the private profile.
Add match_id as reference in the coin_transaction. Display link to match in transaction history in profile (but link not persistent when match is completed).
Merge pull request #75 from paulld/improve_coin_transactions

Add match_id as reference in the coin_transaction. Display link to match in transaction history (but link not persistant).