Bugfix: Handling of item locations from old feeds

IDFeed v1.1 (EDK 4.0.7.0 and below) returns inventory flag 0 for fitted
items, and an empty string as edkapi version. IDfeed v1.2 (EDK 4.0.8.0 and
above) will now check for an empty or lesser IDFeed version and assign
zero-value flags on incoming items to their appropriate slot