Add WHO Nutrition Guidelines

When viewing the analysis for the detailed nutritions like vitamins, minerals, etc. I am missing the relation to some guidelines or recommended values for a person on my age, etc.. You could build up a database for nutrition guidelines or check if the WHO (World Health Organization) has an API for this and display those values as a recommended intake in the section where you are located (e.g. Vitamin A, B, Salt, etc.).

In addition, you could setup opt-in notification when a certain threshold value is reached to "warn" you about the increased intake of e.g. salt.