WHAT: unit tests for vue components and vuex store and environment for it
WHY: to cover frontend part with tests
Change-Id: I2aeaadb200176d4ba0a1406068304785e95d92cd
WHAT: multinode payout types, api and store
WHY: preparation of logic for mnd payouts page implementation
Change-Id: I4f2ea78056eab84c482853ef7a6c4cab4fb4c04f