Add cooking weights and volumes to food search keywords input
To make building recipes easier, for the food search keywords text input box, add search keywords for weight (gram, kg, oz, lb) and volume (dash (1/8 tsp), pinch (1/16 tsp), smidgen or shake (1/32 tsp), drop or nip (1/64 tsp), tsp, tbsp, cup) and only show foods in the results that contain the food description keywords and weight or volume keywords. This makes it easier to add recipes from the web that use these terms. Thank you!