Update Losar Expression Pack

[cstiens]

Final edits ready on Tues, Feb 6

[cstiens]

@n8fr8 The complete updated losar pack is here (outside of the folders): https://github.com/zom/Zom-Assets/tree/master/stickers/losar

[n8fr8]

We need to keep all of our old stickers in there, since people are already using them. We can add the new ones, but we can't remove the old ones.

[N-Pex]

Oh, yeah. So I guess the new Losar stickers that were moved to the expression pack will be duplicates.

[n8fr8]

@N-Pex I processed the stickers a bit, trimming them, compressing them, and updated the Zom-Assets project, so you probably need to pull them down again.