refs #73 added migration to remove shipping seal from Movement[normalization reason]
refs #73 added method to access shipping_line of export
refs #73 changes in movements controller test setup
refs #73 added migration to remove shipping line from BillOfLading
refs #73 added method shipping line to bill_of_lading
refs #73 shipping line added as non-editable text-box on BL payment
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Merge branch 'issue_73'