Merge pull request #355 from minilikmila/fix/facebook-login

Modify the Facebook login authentication callback to enable user email access through the response body.

server/handlers/oauth_callback.go

@@ -452,7 +452,7 @@ func processFacebookUserInfo(code string) (models.User, error) {
 	userRawData := make(map[string]interface{})
 	json.Unmarshal(body, &userRawData)
 
-	email := fmt.Sprintf("%v", userRawData["sub"])
+	email := fmt.Sprintf("%v", userRawData["email"])
 
 	picObject := userRawData["picture"].(map[string]interface{})["data"]
 	picDataObject := picObject.(map[string]interface{})