Update labels layout

Fix E-DataPortal#310 (closed)

Notable changes:

• Info table and QR code are now on the same row as the FROM address.
• The QR code always appears next to the info table, even on the return label.
• The ESRF logo is displayed only on the outbound label, next to the TO address.
• The dangerous goods/storage notices move to the bottom of the label.
• Fewer info are displayed in the info table on the return label.
• The TO address is a little bigger.