Reusable block categories slug is useless

[mikelittle]

The slug for reusable block categories is not useful as there is no front facing aspect to these. Perhaps hide the column and editable field in the UI.

[veselala]

Hey team! Please add your planning poker estimate with ZenHub @mikelittle @robindevitt @shadyvb

[veselala]

@roborourke we voted this to be 1 story point and moved it to the backlog
@veselala update the acceptance criteria

[robindevitt]

This section for reference :

[mikelittle]

And these two places: