wui: rest access to config views (csv and html lists)
wui: preparing for wui config upload
wui: icon fix
sched: fixed resource management that was no longer working for a while

it was broken since config management implementation
sched/config/ui: fixed host available resources on config reload

previously currently available resources was not updated through signals
on config reload, hence messing up available resources models/views until
new resources events occur (until enough tasks have been started or
finished to fix every resource in these models/views)