ARMORY-225 - Multisig unit tests

-Add a "fake" block mining mode. Useful when trying block mining
changes.
-Add more info to make new block creation easier on C++ unit tests.
Merge branch 'dev' of github.com:etotheipi/BitcoinArmory into dev
ARMORY-225 - Multisig unit tests

-Dumped CL args for the blockchain creation script due to ArmoryUtils
collisions.
-Cleaned up the code and fixed multiple bugs.
less concurency in scans
fixed ledger rendering refactorisation snafu
Fixed issue with lastSDMState
Initial attempt at Namecoin fee calculation
Merge remote-tracking branch 'upstream/dev' into namecoin