Change the way blinking is activated
Change the way blinking is activated

This simplifies selecting blinking in glade.
if the blink rate is zero - no blinking.

cdsteinkuehler/MachineKit,ianmcmahon/linuxcnc-mirror,cnc-club/linuxcnc,bmwiedemann/linuxcnc-mirror,strahlex/machinekit,ikcalB/linuxcnc-mirror,araisrobo/machinekit,ArcEye/MK-Qt5,ArcEye/machinekit-testing,araisrobo/machinekit,Cid427/machinekit,EqAfrica/machinekit,ianmcmahon/linuxcnc-mirror,EqAfrica/machinekit,unseenlaser/machinekit,unseenlaser/machinekit,mhaberler/machinekit,ikcalB/linuxcnc-mirror,EqAfrica/machinekit,unseenlaser/machinekit,kinsamanka/machinekit,ArcEye/machinekit-testing,cdsteinkuehler/linuxcnc,Cid427/machinekit,aschiffler/linuxcnc,cdsteinkuehler/MachineKit,cdsteinkuehler/MachineKit,araisrobo/machinekit,ikcalB/linuxcnc-mirror,RunningLight/machinekit,RunningLight/machinekit,bmwiedemann/linuxcnc-mirror,cdsteinkuehler/linuxcnc,Cid427/machinekit,ikcalB/linuxcnc-mirror,ArcEye/machinekit-testing,unseenlaser/machinekit,mhaberler/machinekit,EqAfrica/machinekit,bmwiedemann/linuxcnc-mirror,RunningLight/machinekit,kinsamanka/machinekit,cdsteinkuehler/linuxcnc,ArcEye/MK-Qt5,bobvanderlinden/machinekit,bmwiedemann/linuxcnc-mirror,EqAfrica/machinekit,ArcEye/machinekit-testing,Cid427/machinekit,narogon/linuxcnc,strahlex/machinekit,Cid427/machinekit,araisrobo/machinekit,unseenlaser/machinekit,kinsamanka/machinekit,araisrobo/machinekit,cdsteinkuehler/MachineKit,bobvanderlinden/machinekit,araisrobo/linuxcnc,cnc-club/linuxcnc,mhaberler/machinekit,unseenlaser/linuxcnc,araisrobo/linuxcnc,ikcalB/linuxcnc-mirror,ArcEye/machinekit-testing,cdsteinkuehler/MachineKit,ArcEye/MK-Qt5,araisrobo/linuxcnc,jaguarcat79/ILC-with-LinuxCNC,ianmcmahon/linuxcnc-mirror,ArcEye/MK-Qt5,cdsteinkuehler/linuxcnc,ArcEye/machinekit-testing,araisrobo/machinekit,ianmcmahon/linuxcnc-mirror,ianmcmahon/linuxcnc-mirror,aschiffler/linuxcnc,bobvanderlinden/machinekit,ArcEye/MK-Qt5,kinsamanka/machinekit,cnc-club/linuxcnc,unseenlaser/linuxcnc,araisrobo/machinekit,aschiffler/linuxcnc,araisrobo/linuxcnc,unseenlaser/linuxcnc,strahlex/machinekit,cdsteinkuehler/linuxcnc,unseenlaser/machinekit,ArcEye/MK-Qt5,cdsteinkuehler/linuxcnc,ianmcmahon/linuxcnc-mirror,strahlex/machinekit,aschiffler/linuxcnc,ikcalB/linuxcnc-mirror,kinsamanka/machinekit,ArcEye/MK-Qt5,RunningLight/machinekit,narogon/linuxcnc,jaguarcat79/ILC-with-LinuxCNC,jaguarcat79/ILC-with-LinuxCNC,cnc-club/linuxcnc,araisrobo/machinekit,mhaberler/machinekit,bobvanderlinden/machinekit,bmwiedemann/linuxcnc-mirror,RunningLight/machinekit,araisrobo/linuxcnc,kinsamanka/machinekit,ArcEye/machinekit-testing,Cid427/machinekit,EqAfrica/machinekit,strahlex/machinekit,ianmcmahon/linuxcnc-mirror,cnc-club/linuxcnc,mhaberler/machinekit,cnc-club/linuxcnc,RunningLight/machinekit,narogon/linuxcnc,bmwiedemann/linuxcnc-mirror,cdsteinkuehler/MachineKit,araisrobo/machinekit,aschiffler/linuxcnc,strahlex/machinekit,narogon/linuxcnc,mhaberler/machinekit,bobvanderlinden/machinekit,cnc-club/linuxcnc,jaguarcat79/ILC-with-LinuxCNC,mhaberler/machinekit,EqAfrica/machinekit,ArcEye/machinekit-testing,bmwiedemann/linuxcnc-mirror,bobvanderlinden/machinekit,bobvanderlinden/machinekit,EqAfrica/machinekit,kinsamanka/machinekit,unseenlaser/machinekit,Cid427/machinekit,kinsamanka/machinekit,ArcEye/MK-Qt5,jaguarcat79/ILC-with-LinuxCNC,ikcalB/linuxcnc-mirror,unseenlaser/linuxcnc,RunningLight/machinekit,unseenlaser/linuxcnc,mhaberler/machinekit,Cid427/machinekit,bobvanderlinden/machinekit,strahlex/machinekit,RunningLight/machinekit,narogon/linuxcnc,unseenlaser/machinekit