[Feature] Sort by required level

[youdz]

In the collection, sorting items by required level would allow players to find usable gear as they're leveling up.

Should probably be combined with a way to filter down to armors, specific weapon types, equipment slot, etc.

[cyfex]

I second this. It should at least show the requirements of the items, or else we can only look into the Plugy stash by launching the legacy d2 again.