Fixes the error where File Browser would fail when the DB existed with size 0. This closes#628.
@1138-4EB I decided not to check the version for now since it's the first time we're adding that info. Only the next time we change the DB structure we'll use that value as reference to know how to upgrade.
I did not check it because the users running rc1 would have some issues with it.
Henrique Dias