Fail if a module loaded at bootstrap doesn't return a function

@gtrogers, @maxfliri
Services controller returns a function

@gtrogers, @maxfliri
Parse dates for volume graph as DD/MM/YYYY

@moonpxi
@gtrogers
Add fixture for LPA volumes

@moonpxi, @gtrogers
Feature test fixtures override existing stub config.

@gtrogers, @moonpxi
Change conversion funnel to use Mon -> Sun weeks

@moonpxi
@gtrogers
Revert "Change conversion funnel to use Mon -> Sun weeks"

Pushed commit to wrong branch -_-

This reverts commit 667d1d6168c5e827629d4b0b4ffd4bfc2ec60ead.
Change conversion funnel to use Mon -> Sun weeks

@moonpxi
@gtrogers
Fix test descriptions.
Merge pull request #124 from alphagov/bugfix-fco-stacks-order-53300323

Bug fixes: changes to static broke us, and the stack reversal we did broke FCO
Merge pull request #122 from alphagov/ensure-controller-modules-return-a-function

Ensure controller modules return a function
Increasing capybara wait time on travis

Tests were timing out on travis, worth checking if
it's more to do with random ordering than timeouts
but this should fix it for now.
Merge pull request #123 from alphagov/change_date_parsing

Reasonably sure that this is failing because of flaky feature tests. Experimenting with the time out in another branch so merging this one now.
Merge pull request #125 from alphagov/use-Mon-to-Sun-weeks

Once again failing due to flaky feature tests despite bumping timeout. Should pass on jenkins so merging.
mark LPA graph as test data
All feature tests setup their stub data

@maxfliri
Clear stub data before each scenario

@maxfliri
Merge pull request #126 from alphagov/bugfix-volumetrics-resize-50269471

Allow min-height for graphs, fix FCO volumetrics and conversion graph resizing
Merge pull request #128 from alphagov/feature-test-isolation

Feature test isolation
Fixing sunday logic for top5 licenses and details.

@YolinaS, @phss