What: diskspace utilization extended with overused value. Why: to show overused space on chart. Change-Id: I84adf0d0cc94b19026d97655cb3060aad4560860
WHAT: node store, api, types refactoring; service creation; minor payout store changes; Change-Id: I5c52740730db49bc16393b07858354a2914846fb
Change-Id: I6f0c78992598ebbb3f1b3ee73c74e1559fc886b1