Fixing Actors bug where if you have an empty aliaes, add two aliases, and then delete both aliases, refresh the page and the last item to be deleted will not be deleted. The database shows a list of [last_item, '']. The empty string should not be in the list. This commit fixes the empty string. This same bug might exist in other areas?
Incorrect existence check, length could be zero and you would never be able to add aliases.
Merge pull request #277 from thelok/actors_removing_last_list_item_bug

Actors Removing Last List Item Bug