Standardise radio buttons and check boxes

• Bump gemfile to latest toolkit version
• include toolkit js for buttons
• add necessary class

Styles can be found in static in this pull request
https://github.com/alphagov/static/pull/442

https://www.agileplannerapp.com/boards/105200/cards/5197
update gemfile to latest toolkit version
Remove radio button js and move to static to be shared across repos
Merge pull request #96 from alphagov/standardise-radiobuttons-checkboxes

Standardise radiobuttons checkboxes
Remove gemfury source from Gemfile.

We don't use any gems hosted on gemfury any more.
Merge pull request #97 from alphagov/remove_gemfury

Remove gemfury source from Gemfile.
Add branch build script

Webhook + CI setup already done
Merge pull request #99 from alphagov/branch-builds

Add branch build script
Revert "update gemfile to latest toolkit version"

This broke some tests depending on assets in older versions of the toolkit

This reverts commit b35fd48a180ddacfdce30aa0d62c7d8695f23437.
and fd60b740bb2af00aca0d3988f1f336ed92bb2d03
Revert "Remove gemfury source from Gemfile."

This reverts commit fc301b38f7faf75be8a6101343fa4d83ac278563.
Merge pull request #98 from alphagov/fix-broken-tests

Revert frontend toolkit upgrade, back to 0.20.0 (from 1.6.0)