Updating wallet to store unspent outputs

- fixes bug that required rescan after every start.
Merge branch 'master' of github.com:BitShares/bitshares_toolkit
Various updates to networking code.
Merge branch 'master' of github.com:BitShares/bitshares_toolkit
updating fc submodule
Merge branch 'master' of github.com:BitShares/bitshares_toolkit
client mines blocks
Merge remote-tracking branch 'upstream/master' into lotto_experi