#30 moved wallet data to separated service
#30 added storage service
#30 made storage service
#30 made walletDataService working
#30 saved data when its needed
#30 moved getSum to service
#30 moved deleteRow to service
#30 moved addAddress to service
#30 moved check balances to service
#30 moved addAddresses to service
Merge pull request #65 from gkucmierz/30

30