Prepare the aggregator asynchronously (as clients will)
Prepare the aggregator asynchronously (as clients will)

Helps bgo#629008.

renatofilho/folks2,renatofilho/folks,renatofilho/folks2,renatofilho/folks2,renatofilho/folks,pwithnall/folks,pwithnall/folks,GNOME/folks,GNOME/folks,renatofilho/folks,pwithnall/folks,renatofilho/folks2,GNOME/folks,renatofilho/folks