Create omni_db_schema.psql
Create SQLstatements.md
Added Ecosystem to AddressBalances & Transactions
Added queries
Added WalletState & Date to Wallets
Added Actions plus cleanup. More to be done.
removed \x from <walletid> input values

WalletID is a UUID, not a hex value.
formatting cleanup
Refined Transactions table, added Protocols table
corrected TxSeqInBlock field name in TxSeq index
BalanceForOffer & BalanceForAccept AddressBalances can be null
Updated several tables

* Wallets - added signed-in duration & flag
* Transactions - added TxSeqInBlock to TxTime index
* PropertyHistory - corrected PropertyType, added PrevPropertyID, added PropertyName to indexes
* cleaned up various comments
Don't need SessionDuration in Wallets; removed it.
removed TxMsg JSON object from Transactions table

We don't need it now, and we'll keep it in a separate table (TxJSON) if we decide we do need it.
Added TxDBSerialNum for faster join processing
Changed BaseProtocol to Protocol, ...

* Protocol can be 'Bitcoin' or 'Mastercoin' for now
* check for 'Active' wallet
fixed typos, added "if not exists" to table creates
added foreign key to TxJSON
added issuer as an address role; AddressesInTxs.TxDBSerialNum is not null default -1
Updated defaults, nulls for AddressBalances