LT-14183, fixup should remove empty parents of dangling refs

Primarily, we want to get rid of atomic ones, so that is what
is tested. The current patch actually gets rid of empty sequences
and collections also.

Change-Id: I7111f5179170aebc86d12e038ab135e476474c2e
LT-14188, handle hunspell finding no spelling suggestions

Change-Id: If84610a00d00d5d25b36782f1fab8bb797fb5000