Add example of spec version of storage_test.rb
Fixes whitespace issues in storagefs.rb, makes certain lists of
instance ID's or save names returned by storage functions are
sorted for consistency when testing.
Updates the storagefs_spec.rb testing file to provide a full battery
of testing.

References #2746.
Run the *_spec.rb riles as well as the *_test.rb files
Merge branch 'branch/persistence-listsaves' into branch/persistence-listsaves-specs
Removes storage_test.rb original storage test implementation since
the updated spec style implementation covers the same testing
purposes.