Run a training course

As someone who is new to IBEX I'd like to learn how to use it

## Acceptance Criteria
1. A course is scheduled
1. The course content is updated as appropriate
1. The setup for the course is undertaken, enough sandbox instruments are available
1. The attendees are identified and contacted with the information of when the course will be
1. The course happens

## Notes
1. https://github.com/ISISComputingGroup/ibex_developers_manual/wiki/Training-Instrument-Scientists-in-IBEX has information about running training courses

Start with the Training Instrument Scientists in IBEX wiki page linked in the issue to understand the existing course guidance. Confirm the course schedule, updated content, sandbox instrument availability, attendee communications, and completion of the training; the issue provides no source files or tests to run.

Scritto dal modello di indicizzazione a partire dal testo della issue.