message: Remove panics from iroha_app_state
diff: @@ -204,7 +204,7 @@ func (ias *IrohaAppState) getIrohaAccount(addr crypto.Address) (exist bool, err
  fmt.Println("Query result for address " + addr.String() + ": " + queryResponse.String())
  return true, nil
  default:
  - panic("Wrong queryResponce for getIrohaAccount")
  + return false, fmt.Errorf("wrong queryResponse for getIrohaAccount")
  }
  }
  @@ -261,7 +261,7 @@ func (ias *IrohaAppState) getIrohaAccountDetail(addr crypto.Address, key string)
  }
  default:
  - panic("Wrong queryResponce for getIrohaAccountDetail")
  + return []byte{}, fmt.Errorf("wrong queryResponse for getIrohaAccountDetail")
  }
  }
  