Use uncompiled ydn-db

[greenyouse]

Same issue as greenyouse/ydn-cljs#1

There is trouble retrieving items from clientside storage because ydn-db and IndexedDB are asynchronous. When initializing a DBAtom, the items from clientside storage need to be fetched and reset as the value of the DBAtom. Because the clientside lookup is asynchronous, we hit a race condition and the DBAtom stays nil.

(I'm aware that https://github.com/greenyouse/pldb-cache/blob/master/src/pldb_cache/core.cljs#L139 is really dumb. It was just where I decided to give up after trying it a bunch of different ways 😦 )