Search result items borrow status should reflect user's actions (e.g. waitlist, borrow)

[mekarpeles]

Open Library has a broken understanding of what books are readable.

1. Open library is behind because solr takes so long to index and often breaks/aborts during updates
2. Open Library doesn't distinguish between daisy-only results (i.e. books which can only be read by the print-disabled) and books which can be read/borrowed by anyone.

As a result, when ebooks mode is selected on Openlibrary.org /search, we make ajax calls to Archive.org's Availability v2 API to fetch filter out daisy-only books and to paint the UI with the correct availability information.

This causes an annoying flicker in the UI which is described in #733 and should be addressed by moving this availability check + filtering to the backend in /plugins/worksearch/code.

This issue addresses another externality of these circumstances, that the search/ results UI is not being updated to reflect users' position on waitlists / borrow status. e.g. if a user clicks "join waitlist" from the search results page, and then the user does the same search, the UI will still show "join waitlist" instead of saying, e.g. "You are next on the waitlist"

[mekarpeles]

resolved via #995 (at least for the search results page -- suggesting this pattern be followed elsewhere)