Better commodity trash functions

[Rockinsince87]

I'm quite sure this has been suggested over and over again and I only spent a few seconds checking but I could not find it. 

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This is kind of two suggestions in one.


1. Trash Max Button - When trashing commodities in a city, add a "max" button (location in the red area bellow perhaps) so the highest value can be automatically entered into the quantity field instead of typing the number out each time.



2. Stockpile management - This one is more involved. Create a new UI dialog window that allows for querying all the commodities from every building automatically in a city in one window. Then allow for trashing any quantity from that total dynamically. Meaning every building in a city that has the commodity should trash the item if requested.