Homestyx hydra

R1:b14ca389401e

Conpherence - improve stack re: non-update updates

Summary:
Fixes T7761. Fixes T7318.

When we send an empty message to the server, pretend its just a request to load the page. Make load a bit smarter such that if we don't get back any transactions, rather than error like the fool, just send down to the client the notion of a 'non_update'. Instrument the client to just turn off the appropriate loading state, etc for a non update.

T7318 is a tricky beast since we don't know exactly how to reproduce it but…
Repository: R1 hydra
Commit Date: Apr 9 2015