Fix for beta label css missing

Version bump of frontend_toolkit and including the alpha-beta file.
Removing current item in breadcrumb trail

In order to avoid repetition of text, I've removed the current item from
the breadcrumb nav to match the way they are used on the rest of GOV.UK.
Making the topic dropdown background longer

Between certain screen widths, the topic dropdown background image didn't
stretch across the entire width of it exposing the white bg.
Merge pull request #121 from alphagov/fix-for-topics-background-not-being-long-enough

Making the topic dropdown background longer
Merge pull request #119 from alphagov/fix-for-beta-label-css-missing

Fix for beta label css missing
Merge pull request #120 from alphagov/remove-current-item-from-breadcrumbs

Removing current item in breadcrumb trail
Adding better_errors

Also changing testing instructions
Adding Organisations

Model, Spec and Migration. 1st part of
https://www.pivotaltracker.com/story/show/67487248
Rake task to import orgs from GDS API

Also adding Importer and spec test for importer
Contact now uses Organisation, removes Department

Also changing all the tests for the models and associated bits of non-view
or controller that touch contact.

Part of https://www.pivotaltracker.com/story/show/67487248
Contacts uses Organisation in Views

Also changing all controllers, feature tests and routes
Add index for organisation_id on contact_groups
Test cleanup for using Organisations

Some tests from Master were now failing with my new Organisations tests.
This commit fixes those, namely view_contact_spec and view_contacts_spec.

Also changing how Groups are matched to Organisations in seed by doing a
find or create in seeds and removing the old call for the orgs API in env
files.
Refactor Organisation spec to test methods

As per:
https://github.com/alphagov/hmrc-contacts/pull/113#commitcomment-5908997
I've refactored this test to test the actual methods in Organisation.rb
Change to Orgs migration now uses update_all

As per
https://github.com/alphagov/hmrc-contacts/pull/113#commitcomment-5910499
the migration that switches contact and contact group to use Organisations
now uses update_all