Modify VM instructions

So this is a backup.
Enhance setup instructions

Include the need to get accounts and check your setup.
Remove unneeded stuff from setuptest

We don't need people to have hg, pandas etc.
Make "Before the workshop" take up less space
I'll be instructing (a bit) too.
Fix typo
Add Met Office datapoint API link
Bootcamp -> workshop
Boot camp -> workshop
Add (commented out) links at the end of index

These should be uncommented during the workshop

- the first bit includes a how to download material
  used during the workshop, and we should make this
  avalable on Sunday / Monday morning.

- the second bit is links to SWC lessons etc. We should
  make this avalable before the end of day 2.
Tweak "during and after the workshop"

This now includes the code of conduct, the etherpad, the
hashtag and how to get hold of the workshop material.
Add text to ask people to take a look at bash
Update helpers/instructors - add Grace