Notifications widget: support custom interval
Notifications widget: support custom interval

If 'interval' attribute is passed in notification object, use that
interval instead of the default.

Conflicts:
	ui/scripts/ui/widgets/notifications.js

DaanHoogland/cloudstack,jcshen007/cloudstack,resmo/cloudstack,GabrielBrascher/cloudstack,jcshen007/cloudstack,mufaddalq/cloudstack-datera-driver,DaanHoogland/cloudstack,resmo/cloudstack,jcshen007/cloudstack,GabrielBrascher/cloudstack,resmo/cloudstack,GabrielBrascher/cloudstack,jcshen007/cloudstack,wido/cloudstack,mufaddalq/cloudstack-datera-driver,GabrielBrascher/cloudstack,DaanHoogland/cloudstack,jcshen007/cloudstack,wido/cloudstack,resmo/cloudstack,wido/cloudstack,jcshen007/cloudstack,resmo/cloudstack,mufaddalq/cloudstack-datera-driver,GabrielBrascher/cloudstack,mufaddalq/cloudstack-datera-driver,resmo/cloudstack,wido/cloudstack,GabrielBrascher/cloudstack,DaanHoogland/cloudstack,mufaddalq/cloudstack-datera-driver,DaanHoogland/cloudstack,wido/cloudstack,GabrielBrascher/cloudstack,resmo/cloudstack,wido/cloudstack,jcshen007/cloudstack,DaanHoogland/cloudstack,mufaddalq/cloudstack-datera-driver,DaanHoogland/cloudstack,wido/cloudstack