Include staked balance in getBalances and investment value

[Hornebom]

Update
https://github.com/centrifuge/apps/blob/5e95c82ec3d9955d819b0d256a76b01098eab672/centrifuge-js/src/modules/pools.ts#L1905

Check response of
https://polkadot.js.org/apps/?rpc=wss://fullnode.development.cntrfg.com#/chainstate > ormlTokens > accounts()
orml tokens can be free and/or reserved
currently only free is used (reserved are the staked tokens)

Double check if state.investmentValue and state.trancheBalanceWithPending are correct calculated in regard to staking
https://github.com/centrifuge/apps/blob/5e95c82ec3d9955d819b0d256a76b01098eab672/centrifuge-app/src/components/InvestRedeem/InvestRedeem.tsx#L218
https://github.com/centrifuge/apps/blob/5e95c82ec3d9955d819b0d256a76b01098eab672/centrifuge-app/src/components/InvestRedeem/InvestRedeem.tsx#L221