Update outcome content

Only outcomes that will remain in the tool have
been changed.
Move non-obsolete options into Q2
Add new outcome School N
Add Visit your child at school option and outcomes
Add Get private medical treatment option
Remove Q3 and obsolete outcomes
Add Transit Q3
Add new outcome for Venezuela (medical)
Remove unnecessary test stubs
Add new outcome for Venezuela (school)
Add new outcome for Venezuela (tourism)
Add new outcome for Venezuela (transit)
Add phrase for China (tourism)
Remove diplomatic options from passport list
Rename outcomes to match Google doc
Merge pull request #649 from alphagov/ukba-visa-tool

Next iteration of UKBA Visa Tool