phystat - Changed layout

Added "Body Mass Index" and broke Cholesterol into three boxes: "Total
Cholesterol", "LDL (bad) Cholesterol", and "HDL good cholesterol".

Replaced hard numbers with #defined symbols and enumerations where it
made sense.

Replaced input masks with validators for a cleaner edit experience.
Aligned the QGridLayouts to Qt::AlignTop

Changed QObjectList to QWidgetList.
metentlayout - replaced input masks with validators