make email address required for token generation and user registration.

External/Interfaces/ITokenRecordDataAccess.cs

@@ -6,6 +6,7 @@ namespace CarCareTracker.External.Interfaces
     {
         public List<Token> GetTokens();
         public Token GetTokenRecordByBody(string tokenBody);
+        public Token GetTokenRecordByEmailAddress(string emailAddress);
         public bool CreateNewToken(Token token);
         public bool DeleteToken(int tokenId);
     }