useXxxApi:
use PollingReducer as a configuration provider
provide pushAPIs, which update respective state with:
pushing status
push result
PollingReducer:
rename to configurationReducer
move polling indication to it's respective state
XxxState.polling = 'true/false'
Reviewed-on: http://192.168.8.55:3000/HQLAx/CordaCheckers/pulls/34
