Update notification box for latest round of updates

[aazaff]

Similar to what we did in #22, we'll want to showcase our recent improvements. I think violet might be a nice color this time...

1. Show total number of collections.
2. Sort by year
3. New versioning options (maybe don't list this since it is kind of backend issue)
4. What else?

[NoisyFlowers]

I think we should mention the versioning changes, since it has effected the collection display page.

Something like:
3. Multiple lineage versioning (collection can supersede/be superseded by one or more collections.

Feels like there should be something else, but I can't think of anything that is relevant to the react client.

[NoisyFlowers]

In 26ffefd

ddm-dev branch, running on dev

[NoisyFlowers]

Further modified in 5862869