dvg_webform_components 7.x-1.0-beta9

Changes since 7.x-1.0-beta8:

• #2903819 by JoshaHubbers, paulvandenburg: Duplicate error messages on address component
• #2909914 by BarisW, ralphvdhoudt: Exporting results results in wrong headers for DVG fields
• #2868413 by ralphvdhoudt: element_children gives error om non-array element
• #2910132 by BarisW: Add placeholder for phone number component
• #2871787 by ralphvdhoudt: Validation uses arguments by reference
• #2878753 by paulvandenburg, ralphvdhoudt: Always pad BSN to 9 digits
• #2909934 by BarisW: Description is not being displayed for DVG Webform Components
• #2888156 by paulvandenburg: Stopform component doesn't actually stop the form from continuing
• #2887541 by paulvandenburg: Validation errors with the new internal postal code list
• #2888780 by JoshaHubbers, paulvandenburg, askibinski: BSN validation 0 and 00000000
• #2880269 by paulvandenburg, ralphvdhoudt: PO box with placeholders selected in address component breaks
• #2882447 by paulvandenburg: Validation problems when using po box
• #2880574 by paulvandenburg: Address values aren't trimmed