Better display for exotic class item perks, remove stats from class items in itemfeed

[FlaminSarge]

Makes exotic class items use the intrinsicRow display instead of normal socket UI. It also treats exotic class items' intrinsic perks as non-reusable so that they don't get highlighted as selectable perks in the UI.

This also removes the stat display from class items in the item feed.

Desktop:

Mobile:

[FlaminSarge]

Something in this implementation is clobbering perks in d2-stores' snapshot test, so investigating that before I move out of draft.

In the meantime please let me know of any esoteric cases I should test for this.

[FlaminSarge]

It seems like the isReusable hack can be omitted if https://github.com/DestinyItemManager/DIM/tree/archetype-presstip goes in, though I'm not sure which solution is the right one to go for.

[FlaminSarge]

Do class items really need stat display on the item feed?

[bhollis]

Nope

[FlaminSarge]

Removed the stats from class items; can revert if needed.

[bhollis]

@robojumper you've got the most experience with the socket stuff - would love your opinion on this.

[FlaminSarge]

I've got an alternate way of handling this master...FlaminSarge:DIM:exoticclass2

I've swapped the contents of master...FlaminSarge:DIM:exoticclass2 and master...FlaminSarge:DIM:exoticclass as the other implementation is much cleaner and doesn't touch nearly as many places due to omitting the 'multiple intrinsics' change.

UI remains consistent with the other, and we don't run into the issues associated with changing intrinsicSocket -> intrinsicSockets.

[FlaminSarge]

As a consequence of updating it to show multiperk sockets in feed (to mirror impl of previous weapon PR for consistency), the spacing has changed by 1px for each perk column:

It was either do this, or add some strange styles to try to get around the fact that armor divs were less nested than weapon divs.