Update README for spelling of user-centred design
Final changes of "user-centred design" spelling

Fixes #328.
Merge pull request #372 from alphagov/finish-off-user-centred-design

Finish off user-centred design
Tweak capitals on 'Service manager' page

- Senior Civil Servant doesn't exist as a thing
- Digital by Default Service Standard is capitalised
- Service manager is not capitalised
- Product manager is not capitalised
Remove empowerment

This word is specifically forbidden by the style guide.

https://www.gov.uk/design-principles/style-guide#writing-plain-english
Merge pull request #374 from alphagov/service-manager-tweaks

Service manager tweaks
Balance parentheses

Not broken URLs this time.
A guide to help understand the scope of web operations work

This is based on a Google document I wrote about a year ago that has
seen extensive use on a number of exemplar projects and that is being
shared a little too widely.

I'm stil skeptical that anything that appears to be this prescriptive is
a good idea, but in practice this has worked very well and had the
desired effect, namely to make people much more aware of the amount of
work required. So it's well tested, if on the face of it a bit crazy.

For work like this that is broadly similar for many services starting
with many things and then adding a few and removing a few appears better
than starting from scratch everywhere.
Trim trailing whitespace