Flow Sort is not stable

[mhils]

We currently use Array.sort in in ducks/utils/store.js, which is a bad idea because it's unstable. We should instead use _.sortBy and adjust makeSort in ducks/flows.js accordingly.

[MatthewShao]

sorry for the really late response.
_.sortBy does not accept a compare function as Array.sort does, while we are using the compare function everywhere. How about including a new dependency: stable, so that we can preserve our code structure and get the stable sorting.

[mhils]

Hm, it's a bit stupid because we go through the tedious process of creating a sorting function here only to then need to work around it. 😅
It's probably not much harder to makeSort -> makeSortKey?