Make sure structure for wake word exist before use
Make sure structure for wake word exist before use

==== Fixed Issues ====
#1105

====  Tech Notes ====
Verify that the sub-config for the set wake word exist before writing to
it.

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