Resolve "Create instrument tag fails but it is not reported to the user"

Closes #193 (closed)

• Save is disabled if no name is provided for this specficic case
• for general case, added nofication to user when we get an error on fetch (except 401, 403, 404 which are handled differently because they are expected in normal use)

This notification component can be used from anywhere, to notify user of errors, warning, successes, info... with the useNotify hook)