Revert "Optimise Guard file change detection"

This reverts commit 90b8e361600c592096dee305ce7f705b02b2345d.

Conflicts:
	Gemfile
	Gemfile.lock
Configure Guard to not run all tests on start
Configure Guard to start a Rails server
Update listen dependency
Update guard-rspec dependency
Update dotenv dependency
Update rspec-mocks dependency
Update raindrops dependency
Update autoprefixer dependency
Configure guard to automatically bower install
Correct link header for category blueprint
Correct example id for category blueprint
Add canonical link headers to api blueprint
Fix iframe issue when javascript is turned off
ContentService returns `contents' not `content'
Merge pull request #74 from moneyadviceservice/bug/iframe

Fix GTM iframe issue when javascript is turned off
Create production group in Gemfile

Isolate dependencies we only use in production.
Fix production Gemfile group
Isolate asset group in Gemfile

We are precompiling our assets before we run our application in
production, adding an assets group prevents these gems being required in
production.
Remove turbolinks