Coinffeine/coinffeine — pull request #137 by sortega (2014-06-02 14:59:44+00:00)
Title: Bump bitcoinj to 0.11.1 and remove workarounds

**Description:** bump to bitcoinj 0.11.1. As this version solves TransactionSignature equality problem, remove `TransactionSignatureUtil`, not needed anymore.
**Testing:** tests pass
**Coverage:** unchanged