Add rspec 3.0.1
Migrate user test to rspec
Upgrade shoulda to latest

This prevents warnings with rspec 3
Govt requests: migrate unit tests to specs
Anonymous feedback: migrate tests to specs
More govt requests: migrate unit tests to specs
Tidy up activerecord error specs

This introduces the `rspec-collection_matchers` gem.
Tidy up anonymous contact spec
Merge pull request #172 from alphagov/porting-unit-tests-to-rspec-part1

Porting unit tests to rspec part1