CLI improvements, as per issue #493
CLI improvements, as per issue #493

* "Input:" doesn't get intermingled with the output (usually -- long pauses can still cause it to happen)
* "Output:" is now displayed
* Ctrl+C is handled gracefully

aatchison/mycroft-core,forslund/mycroft-core,Dark5ide/mycroft-core,linuxipho/mycroft-core,MycroftAI/mycroft-core,MycroftAI/mycroft-core,linuxipho/mycroft-core,Dark5ide/mycroft-core,aatchison/mycroft-core,forslund/mycroft-core