Update to intro text for Monday 8th April

Minor copy change for publication on 8th April
Copy changes for Child Maintenance
Fix for last questions out of view
Merge pull request #282 from alphagov/pip-checker-updates

Update to intro text for Monday 8th April
Add missing semi-colon
Logic fix for content on legalising documents
Capitalise letter
Merge pull request #289 from alphagov/keep-question-in-sight

Fix for last questions out of view
Merge pull request #290 from alphagov/legalisation-logic-fix

Legalisation logic fix
Fix time-related failure in state pension calculator

Fix time at post-April and update values for context block
Merge pull request #287 from alphagov/child_maintenance_fixes

Copy changes for Child Maintenance
Use timecop to set the date on tests failing

These tests test a bit of the SA that uses Date.today. If we don't
timecop this, we'll have to update these tests weekly as they work off a
date in the future that's calculated.
Remove reference to `govuk_setenv`.

This internal script shouldn't be required for development test runs.

Fixes #263.
Timecop the mat-pat calculator tests
Merge pull request #292 from alphagov/remove-setenv

Remove reference to `govuk_setenv`
Restructure timecop tests for maternity pay
Update calculator tests with new rating value
Merge pull request #293 from alphagov/time-related-test-fixes

Time related test fixes