Replaced background image urls pointing to the uploaded files directory with urls served up on the arches mockups page. re #1335
Replaced background image urls pointing to the uploaded files directory with urls served up on the arches mockups page. re #1335

archesproject/arches,archesproject/arches,cvast/arches,archesproject/arches,cvast/arches,cvast/arches,archesproject/arches,cvast/arches