classify the athletes by their training status

[Ruggero1912]

According to their training status classify the athletes and show the status as a different color in the ListView (for example).

Define training status.

[Ruggero1912]

Implemented those training Status:

    public enum TRAINING_STATUS{
        OVER_TRAINING,
        GOOD,
        LOW,
        REST;

        public static TRAINING_STATUS DEFAULT = REST;

        public static Double OVER_TRAINING_HR_THRESHOLD = 150.0;
        public static Double GOOD_TRAINING_HR_THRESHOLD = 100.0;
        public static Double LOW_TRAINING_HR_THRESHOLD = 80.0;
    }

The current training status is determined according to the heartrate thresholds