make store and backend query functions non lwt-y
turn aSSert and aSSert_exists into queries iso updates
fix concurrency bug in confirm
remove a couple of warnings
comments from 'Non lwtey' PR
make some more backend methods non lwt-y
(expect_progress_possible, check, get_routing, get_fringe,
get_cluster_cfgs, get_current_state)
Merge pull request #434 from Incubaid/non-lwtey

Non lwtey