Index input scripts addresses for non-standard P2SH

[braydonf]

Related:

• No SpentTxId for P2SH addresses insight-api#444
• Remove Redeem Script Classification Requirement from Script.isScriptHashIn() bitcore-lib#36

There is an issue for pay-to-script-hash were an address spending txid won't be added to the address index if script.isScriptHashIn() doesn't return true, which does a check for standard script types, instead of referencing the previous output script to see if it's a pay-to-script-hash.

[braydonf]

Resolved as addresses for inputs are determined by the previous output, as included in: bitpay/bitcoin#6