Some modifications to Wallet to remove user interaction from module.
Removal of ElectrumWrapWallet, moved to the plugin files.
Add tests for aes, mnemonics.
Add harness for tests in jmclient, conftest.py and commontest
Add .coveragerc for these tests locally.
Also, some minor changes: filter_orders_callback taken outside
Taker since it involves user input necessarily. Related, answeryes
removed from module, can be done outside.
Donation code explicitly removed from all code branches for now.
A couple of very minor changes thrown up from testing.
Coverage of Taker now 100%, will work on the rest of jmclient.
Adam Gibson