Adds inset block partial
Adding and using UI inset-block component helper
Changing callout style for interest rate warning
Adding risk accent component
Renaming to risk component
Adding risk accent warnings to budget affect statements
Removing go back links in warnings
Outputting risk level from initial markup
Changing medium risk colour
Adding dynamic class with javascript too
Removing unnecessary markup
Merge pull request #152 from moneyadviceservice/warnings

Missing data warnings and risk level colours
affordability GA when user completes
Fire GA when user refines borrowing slider

Also fixes sliders firing GA events on initialise
Comment GA tests as break CI
Uncomment and fix GA features

* Add the have_analytics_event rspec matcher, which will retry for
  Capybara.default_wait_time before failing a test
* Correct an incalid stamp duty calculator URL
Apply @javascript to all of analytics.feature