Remove the validate action as objects are immediately created
Finish removing the add item mechanism as items are automatically added
Remove static id from the model as they will be generated by the server
Use the English word
Remove useless code as there are no options menu in EditItemFragment
Same for HistoryEntryListFragment
Return a dummy agent interface in case of ControllerException to avoid NPE in any case
Add IllegalStateException if the selected item is null
Fix indentation
Remove useless null checks now
Remove previous commit as it seems to break communication