Reshuffled validation messages on page 8 so that null errors on empty fields will show first over other errors.
Added regex numerical only checks to min and max prices
Merge branch 'master' of https://github.com/alphagov/supplier-submission-portal into page8_min_price_validation
Merge pull request #148 from alphagov/page8_min_price_validation

Reshuffled validation messages on page 8 + added numerical only checks to prices