Handle SSM cache miss when rendering markdown.
Handle SSM cache miss when rendering markdown.

SSM cache misses are possible when rendering markdown on print or offline calls as these calls can be made long after the slideshow itself has been rendered in the browser. To ensure YAML config options are always applied on rendering reconstitute SSM from YAML-on-disk if a cache miss occurs.

gitpitch/gitpitch,gitpitch/gitpitch,gitpitch/gitpitch