Ignore the =1's that Faceshift appends to our custom data in the FST.
Provide a means to specify a fallback for when we fail to load a model.  Also
added missing associated resources for default model.  Closes #1960.
Merge branch 'master' of https://github.com/highfidelity/hifi
Merge pull request #1971 from ey6es/master

Ignore extra "=1"'s that Faceshift appends to FST files, fall back to default head/body on failure to load.