Update devel to implement new item values

[J-8]

I would be very thankful if someone could update the database connector and api.php to incorporate the new itemCategory and a function to toggle the 'checked' value.

I am working on adding the features to the app.
The function save and delete can also be deleted, because even when you add a single item, the app will use saveMultiple from now on.

Thanks :)

[jklmnn]

I'll look through this when I find time.

[J-8]

Thanks. But no hurry :)

[the0ne]

@J-8 is your request still valid?