Normalize weight values/units in Inventory Browser

[awildturtok]

While entering my inventory I added some stuff in grams and some stuff in pounds because it was easier than converting and also because I was hoping I can convert the values in your browser later, and do sorting by weight. Currently 100g is sorted above 0.5 lbs etc which makes sense if you are sorting by number not by actual weight.

It would also be nice if I could change the weight units and have the conversion done for me automatically like in the recipe builder as that is a very nice feature!