add merge process on linking of second account in case user accidentally signed up with both accounts
add merge process on linking of second account in case user accidentally signed up with both accounts

dy2288/BCDevExchange-app,kelpisland/BCDevExchange-app,kelpisland/BCDevExchange-app,dy2288/BCDevExchange-app,dy2288/BCDevExchange-app,kelpisland/BCDevExchange-app