Proof of concept for content store.
Merge pull request #613 from alphagov/content_store_example

Proof of concept for content store.
Bump plek version to allow service URI override
Merge pull request #614 from alphagov/bump-plek-version

Bump plek version to allow service URI override
Move Sass partials to be partial files

From the Sass documentation:

> If you have a SCSS or Sass file that you want to import but don’t want
> to compile to a CSS file, you can add an underscore to the beginning
> of the filename. This will tell Sass not to compile it to a normal CSS
> file. You can then import these files without using the underscore.

Move the view partials files to be named as per the Sass convention.

[1]:
http://sass-lang.com/documentation/file.SASS_REFERENCE.html#partials
Move imports into main application file

So that the mixins are around for other files move the includes from
view files into application file. As the views are only partials which
will always get compiled by a contianing file they don't need to manage
their own dependancies.

Also standardise the includes style from the frontend_toolkit.
Unify styleguide includes and move not-ie

Move the not-ie conditional file to live with the styleguides as it
is a mixin.

Rename the conditionals file to just `.scss` as it won't ever be just a
css file for the asset pipeline.
Merge pull request #615 from alphagov/tidy-sass

Tidy up Sass
Check SASS compiles as part of Jenkins test runner

* Running asset precompile will catch SASS syntactic/reference errors earlier.
* Use set -e, to immediately fail if any command fails,  rather than than relying
on a manual exit, as we're running more than one 'test' command, more robust.
Merge pull request #616 from alphagov/test-asset-precompile

Check SASS compiles as part of Jenkins test runner
Stop UKVI A/B test
Show tax disc beta to 50% of users
Rename tax disc test and cohorts

This effectively creates a new A/B test using the
new weightings.
Set the weights for each cohort
Bump govuk_frontend_toolkit for weighted tests
Merge pull request #618 from alphagov/increase-tax-disc-beta

Show tax disc beta A/B test to 50% of users
Call imminence directly for find_nearest searches.

This change takes content_api out of the path for finding nearest places from a
postcode, as part of preparations for the move to the new content store.

Previously frontend was calling MapIt to get lat/long for a postcode, then
passing that location to content_api which in turn called imminence to get the
nearest places. Imminence now has the ability to call MapIt, so this change
removes the MapIt call here and instead calls imminence with the postcode,
receiving a list of places.
Merge pull request #619 from alphagov/location_from_imminence

Call imminence directly for find_nearest searches.
Pass the debug parameter through to rummager

This parameter allows the ranking options to be changed; for example, it
allows use of best-bets to be turned off.  It's useful to be able to
make these modifications on the live search results to compare the final
ranking that would be produced, and to check if options like popularity
information help for particular searches.
Merge pull request #620 from alphagov/pass_debug_to_search

Pass the debug parameter through to rummager