WIP validation messages
Only validate when asked to calculate
Add validation classes and message to child benefit start dates
css for validation messages
Remove application.css.scss
Adjust validation messages for child benefit start dates
Remove end_date validation for StartingChild
Fix errors array check
Test that has_errors? isn't always true
css changes date selection
Test validation messages appear
Remove unused partials
Switch invalid dates key to end_date
Use ActiveModel validation messages
Only output errors for relevant field next to field.
Rename variable to be clearer
Fix indentation