Improve support for start-many:
- refactored CActiveMasternode
- added masternodeconfig to handle remote masternode configuration
- read masternodeconfig upon init
- new masternode rpc commands: stop-many, start-alias, stop-alias, list-conf
- added notCapableReason field for better handling not capable issues
Merge pull request #75 from freynder/start-many-enh-v0.11.0.x

Improve support for start-many