Configure Pretoria transition countries

This is a tangle of tasks:
- configure Pretoria transition countries to be IPS1 applications
- configure address values for Durham and Belfast countries
- lookup address values from config in flow
- adjust test expectancies in line with the changes above
Refactor application time phrases and add 12 week phrase
Add conditional 'Getting your passport' paragraphs
Remove dupe phrases
Remove some old conditionals for Pretoria transitions
Remove old address lookups
Merge overseas_passports_pretoria_transition

https://www.pivotaltracker.com/story/show/58174578

* origin/overseas_passports_pretoria_transition:
  Remove old address lookups
  Remove some old conditionals for Pretoria transitions
  Remove dupe phrases
  Add conditional 'Getting your passport' paragraphs
  Refactor application time phrases and add 12 week phrase
  Configure Pretoria transition countries
Rescue content API errors
Use preview for loading static
Merge branch 'master' of github.com:alphagov/smart-answers