* Create new FallbackSkill base class for implementing fallback behavior
Also removes multi utterance intent fail. Only makes sense to emit an intent_failure regardless of the amount of intents
There are several issues with the changes recently made to break out
Skills from mycroft-core.
* The subdirectory mycroft/skills/intent/ is left behind when you do
a pull, so the change to core.py that tries to
"import mycroft.skills.intent" gets confused. I renamed the file
intent.py to intent_service.py
* Added a bunch of comments
* Made a bunch of functions "private", using the leading _
* The MSM install was failing. Still working on that, but we should
probably make msm.sh a part of mycroft-core instead of its own
repo.
* Restored some mycroft.conf values that I noticed got lost during
an automatic merge.