suppress errors for no g_application_activate and failed drag icon of…#779

DarthGandalf merged 1 commit intoshutter-project:mastershutter-project/shutter:masterfrom

Tao-T:suppress-errors-gapplication-handler-AND-failed-set-imageview-drag-iconTao-T/shutter:suppress-errors-gapplication-handler-AND-failed-set-imageview-drag-iconCopy head branch name to clipboard